san andreas rocking box offices this weekend. so why are scientists -- in earth will literally crack open. >> taking issue? >> when salon pas began in 1934 a single patch created a category of pain relief. 80 years later, salon pas po v developed in to a family of pain relievers for targeted relief. >> step interview with a firm hand shake. don't do that. head and shoulders cools on contact and gives you 100% flake free. try new head and shoulders instant relief for ♪ good evening. today the world got its first look at caitlyn jenner formerly known as bruce jenner the olympic hero turned reality star who's now the most public face of the transgender community. tonight the picture on the cover of "vanity fair," the behind the scenes video of the photo shoot and the instant global reaction. >> as soon as the "vanity fair" cover comes out, i'm free. >> reporter: for years, 65-year-old bruce jenner referred to his real self simply as "her" but today, finally, her has a name. this is caitlyn. >> this is about your life. bruce always had to tell a lie. he was always living that lie. every day he always had a secret from morning until night. caitlyn doesn't have any secrets. >> reporter: she came out in classic jenner style in as public a forum as a you can imagine. the first pictures on the cover of "vanity fair" taken by the famed photographer annie leibowitz in jenner's holm home in malibu. the way she looks now, an extraordinary contrast though the one-time olympic champ. >> i was probably at the games because i was running from things. >> reporter: this is a behind the scenes look at caitlyn's "vanity fair" shoot, jenner in full makeup designer gowns, bearing her shoulders and chest and showing leg as well. today her inaugural tweet "i'm so happy after such a long struggle to be living my true self. welcome to the world caitlyn. i can't wait for you to get to know her/me." jenner spoke about her transition in this emotional interview. >> it will be an emotional roller coast ier but somehow i will get through it. >> reporter: with diane sawyer this past spring watched by 20 million people. >> are you a woman? >> yes, for all intents and purposes i'm a woman. >> reporter: on the show "keeping up with the kardashians" she discussed with family members how her looks would soon begin to change. >> it's a lot of work. >> okay. >> you do it in stages. you probably didn't even notice. >> you got a nose job. >> i noticed. >> i noticed. >> reporter: according to "vanity fair" jenner went under the knife for what is known as facial femininization surgery saying she had a panic attack recovering at home. she thought what did i do to myself. with all said there was one topic jenner told diane sawyer she would never talk about publicly, the sexual reassignment surgery. >> i would do it so quietly, nobody in the world would ever know. i'm not shooting this or filming anything. to me it is degrading. at this point, as far as the term srs, sexual reassignment surgery, would be down the line you know down the line. >> reporter: jenner told the writer from "vanity f she has not yet undergone that surgery, but for caitlyn and others in the transgender community it is more than just surgery. >> we should not be defined by an operation. we should be defined by our humanity and dignity and that's what is changing. >> reporter: this week on "keeping up with the kardashians" the last images of jenner as bruce. >> i want to say hi to bruce and get my last visual of him that i want without some major physical changes. >> give me a hug. love you guys. >> reporter: today for children all showing their love and support on social media. kendall jenner the 19-year-old supermodel tweeting be free now pretty bird. the rest of the kardashian clan -- khloe tweeting we were given this life because you were strong enough to live it. support from caitlyn pouring in from social media. her twitter account reached 4 million in four hours, faster than president obama, justin bieber or taylor swift hit that milestone. caitlyn jenner became the number one trending topic in america than world. >> today was a milestone moment in what has been a series of milestone moments for the transgender community. >> we are seeing somebody transition who almost every household knows, and the most important thing, i think, is that we can get to know soms transgender and let it not be as big of a deal. >> reporter: film maker kimberly reid grew up as a boy named paul and a starting quarterback on her high school football team. >> part of me presenting a masculine or athletic character to the part of that was me trying to prove to myself and everybody else around me that i wasn't transgender. >> reporter: caitlyn's transition is perhaps the most public in the history of the transgender community. >> do y little bit as if you are saying good-bye to something? >> am i saying good-bye to something? i'm saying good-bye to people's perception of me and who i am. i'm not saying good-bye to me because this has always been me. >> reporter: for kris jenner's wife of almost 25 years, this appears to have been a rocky time. >> i'm trying so hard to just process my pain and get through my days. it's a struggle. all i have really is my memories. i look at pictures of you and the kids and i get really sad because i feel like you died. bruce died. >> honestly i'm not going anywhere. things may change but i still want to be a part of your life. >> reporter: caitlyn said she told kris her situation before they got married. >> i had been on hormones for five years and it was a good solid 36-b, something. so you can't really you know -- you can't hide those things. and she goes well you know okay. you know you like to wear women's clothes and i'm going -- i kind of down played it some. >> reporter: according to "vanity fair," kris said it was comparable to a little man boob situation but no b cup going on. caitlyn said she has apologized for all she did not say but even now her biggest worry, she says is for her children. this season on a special episode of "keeping up with the kargs" the girls share their ongoing frustrations with their father. >> were you planning on not being bruce anytime soon? >> that's quite possible yeah. >> that's something we all need to know. >> i don't think you can say -- like you have children. you don't need permission but you need to tell us. >> i talked to my kids and told you what i was going through. i thought it was understood. >> reporter: his biological children grappling with something so new. >> i held his hand and cried with him and told him how proud of him i was and how inspired i was. >> first thing i thought is oh it finally makes skens sense. >> i asked him what do you want us to call you and he interrupted me and said i'm dad. i will always be your dad. and that was a huge relief. >> reporter: they along with the other kids will join caitlyn for her first public appearance at the espn espys on july 15th. she will accept the arthur ashe courage award. even as much as they support her, the older jenner kids won't be appearing in caitlyn's upcoming docu-series on e! >> my whole life has prepared me for this moment. i want to take advantage of it. i want to do the right thing. and be true to myself. what i'm doing is going to do some good and we're going to change the world. i really firmly believe that. >> reporter: with this step, perhaps she already has. ♪ up next here on "nightline," think you know about the lifestyles of the rich and famous from the real housewives? this social researcher says you don't know the half of it. and why our experts are finding faults, even as san andreas brings down the weekend box office to the tune of 53 million bucks. ♪ the beast was as long as the boat. for seven hours, we did battle. until i said... you will not beat... meeeeee!!! greg. what should i do with your fish? gary. just put it in the cooler. if you're a fisherman, you tell tales. it's what you do. if you want to save fifteen percent or more on car insurance you switch to geico. it's what you do. put the fish in the cooler! this is my body of proof. proof of less joint pain. and clearer skin. this is my body of proof that i can fight psoriatic arthritis from the inside out... with humira. humira works by targeting and helping to block a specific source of inflammation that contributes to both joint and skin symptoms. it's proven to help relieve pain, stop further joint damage and clear skin in many adults. doctors have been prescribing humira for nearly 10 years. >>humira can lower your ability to fight infections, including tuberculosis. serious, sometimes fatal infections and cancers including lymphoma have happened, as have blood, liver and nervous system problems, serious allergic reactions and new or worsening heart failure. before treatment, get tested for tb. tell your doctor if you've been to areas where certain fungal infections are common, and if you've had tb, hepatitis b, are prone to infections, or have flu-like symptoms or sores. don't start humira if you have an infection. >>visit humira.com and talk to your rheumatologist. humira. this is a body of proof! (music) boys? stop less. go more. the passat tdi clean diesel with up to 814 hwy miles per tank. just one reason volkswagen is the #1 selling diesel car brand in america. now there's a razor that swirls and swerves... ... as every blade adjusts to your curves. new venus swirl. with contour blades that have six times more flexibility. plus a flexiball. flawless shaving bones, bends, and all. new venus swirl. it was a concept that set the internet on fire. show-called wife bonus. apparently so some weem women here in new york city get an annual bonus from their wealthy husbands. this was one of many provocative findings in a new book from a social researcher who joined and studied a tribe she refers to as the primates of park avenue. here's abc's mara schiavocampo. >> little fine lines in here. we will do botox when you are ready. >> reporter: a trip to the dermatologist is not for the thin skinned. >> i think we can give you little brow lift. >> reporter: for wednesday martin it is an important detail in a maintenance rej nen an upper crust new york city mother with a lot of extra a cash to burn. planning, okay. >> planning a future. that's what manhattan moms do. >> reporter: martin knows a lot about a particular subset of manhattan mothers. what's the glam s.a.m. >> stay-at-home mom. what i noticed is how glamorous they were. >> reporter: she moved to the upper east side over a decade ago. home to the wealthiest zip codes in the country. an enclave for an elite species of people. so martin took to studying their ways and is now spilling what she calls their secrets in her forthcoming memoir, primates of mark avenue. an early observation, a closed off group of cliquey women who refuse to say so much as good morning or set up play dates with her son. just like grown up "mean girls." >> can't sit with us. >> in reading it felt like a high school you were describing. is that how it felt. >> there were times i felt really bad. i wrote a chapter called play date pariah that women may relate to. they exist between the women of the sandbox as well. >> reporter: showing up to preschool dropoff in chauffeured suvs with full hair and makeup takes work. >> on the upper east side of manhattan you see these women looking incredible and beautiful first thing in the morning. it's not an easy job, but somebody h to do it. >> reporter: staying picture perfect in the clique is pressure that doesn't come cheap. >> it costs about $85,000 a year just to be beautiful enough to play ball in the world that i lived in and clothing is a big part of that. >> reporter: special perks of marriage can help. martin calls it the wife bonus. >> this is one of the things that they describe ed to me. just one with of many of the things that i found really strange. >> reporter: the so-called wife bonus has sparked a flurry of conversation over the last couple of weeks, headlines like makes my skin crawl and fuels sexism. >> it started a conversation. >> reporter: martin says in many instances these women are powerless in their marriages. these w on the men in their life for everything they have. >> how shocking is it to people to consider that a woman married to a rich powerful man who doesn't work might be disempowered not just relative to him. she might be disempowered relative to a middle-class woman who works full time because that woman has autonomy. >> she has her own bank account, her own home. >> with all of the freedoms that come with that. >> i give uptown a new attitude. >> reporter: if you think you know what the uber rich look like thanks to shows like real housewives of new york city guess again. martin says many of the wealthiest women are far from the partying housewives on bravo. >> the real housewives are pretty exhibitionistic. they are outthere airing their problems. the women i spent time with live in what i call and anthropologist call an honor shame culture. you do not want to lose face you do not want people to see the cracks in the facade. >> oh look at that. >> reporter: she didn't want anyone to see any cracks in her own facade so she said she went with it. even shelling out thousands for the ultimate status symbol. a designer birken bag, priced 10 to $150,000 dollars. >> there's a wait list a legend a magic too it and i got very caught up and i wanted one. i felt like it would somehow help me in the competitive high!world i had entered. >> social gatherings are important. >> our conversation turns to one of the darker ss tribe. stories of boozy play dates and drug-fuelled partying that can go overboard. >> we are all being good. we are drinking water. but that's not always the case. there's a lot of day drinking. is that part of the relieving the stress and anxiety that goes with that perfection. >> i have seen self medicate for anxiety and stress and there's more of it in the tribe of women that i spent time with than there might be on average. >> a lot of our viewers think there are two things that cause stress for me my job and money. >> let's be clear. we're not talking about the stresses of not being able to feed your child or not being able to take your child to a pediatrician. those are terrible stressors and i'm not comparing them but once you control poverty, money doesn't make people happier. >> reporter: a sobering reminder that while money can buy glamour it doesn't always bring happiness, no matter what tribe you are in. for "nightline." i'm mara schiavocampo in new york. >> our thanks to mara for that report. what do you think of the idea of a wife bonus? head to our "nightline" facebook page and sound off. up next san andreas is a huge hit but is it remotely realistic? what our nick watt found in an earthquake simulator. setting is just right. but here's the thing, about half of men over 40 have some degree of erectile dysfunction. well, viagra helps guys with ed get and keep an erection. and you only take it when you need it. ask your doctor if your heart is healthy enough for sex. do not take viagra if you take nitrates for chest pain; it may cause an unsafe drop in blood pressure. side effects include headache, flushing, upset stomach and abnormal vision. to avoid long-term injury, seek immediate medical help for an erection lasting more than four hours. stop taking viagra and call your doctor right away if you experience a sudden decrease or loss in vision or hearing. ask your doctor about viagra. ♪ finally tonight. the movie "san andreas" maybe rocking the multiplex right now but the scientists are not impressed. here's abc's nick watt. >> reporter: the rock -- oh. >> oh my god. >> reporter: rubble. and $53 million opening weekend. >> i was really moved by the action. i was moved by the science. i was moved by -- i was moved by the reality of it. >> reporter: okay action a, yeah. how about the science and the reality? >> the simulator is set to 8.0 and it feels pretty real. but i'm not a seismologist. the movie "san andreas" isn't quite so real. >> i found fault in their fault. everything was exaggerated. >> hold on. we have to get over before it crests. >> number one the san andreas fault could never kick up a tsunami because it's on land. >> the earth will literally crack open. >> number two, this fault line only rubs toeb never wide open. the 9.6 is not mooez feasible in california. they say 8.3 is the worst that could hammer the golden state and that's still pretty bad. number four, in a quake strong enough to crack the hoover dam, even the rock would wobble. no way could he work. >> it is fun but i wouldn't try to learn seismology from it. >> reporter: she said they did get some important things right. >> >> aftershocks can happen and one quake can trigger others. >> people need to know the shaking is not over. >> reporter: and the fear spot on. >> going to get our daughter. i promise. >> i love you, dad. >> don't you quit on me. >> reporter: and when it comes to making people prepare for the big one, getting them scared is half of the battle. "san andreas" ten out of ten on that front. i'm nick watt for "nightline" in es con deecalifornia. >> thank you for watching abc news tonight. tune in to "gma" in the morning. as always we are on-line 24/7 at abcnews.com. thank you for watching and good night. ally, do you want to tell mommy what's wrong? do grandma scare you? no. well, then what is it? piano's boring. boring? ally, you've had 3 lessons. ray, just... honey, if you really don't like it, and you don't want to do it anymore you don't have to. great! th's it? what? no more piano, just like that? that's ok? what? i mean you know if she dsn't want to take piano lessons, we're not going to force her to, are we? well...i mean, what if she's great at piano? you got to stick to stuff. you don't quit after 3 lessons. did i quit asking you to marry me after 3 rejections? no. no, no. you don't get anywhere if you quit. i o be... like thahat. ray... what? i had no idea you'd feel so stronglyouabout it. i'm glad that you do. well... you know, i feel very strongly about it. you know what? you should tell ally that you want her to continue. no, wait. wait, please... ally, come here. i don't want to be the one who forces-- come on. i was watching the game, that's all.