to go on television without getting her hair done. she got her hair done. >> yeah. that was funny. >> it looks great. >> reporter: mike mathy, abc news. >> longevity is in the blood in that family a little bit. her mom lived to 100. her grandmother lived to 96. and she had two cousins who lived to the age of 101. so it's in the genes. >> i think it's just a chicago thing, too. keeps you looking young. >> that's right. just like you. >> that good midwestern air. >> you look good for your 70s in that picture. looking good, paula faris. >> go back to school, kid. i'm going to flunk you. you're getting an f tonight. >> i get an f? >> yes. >> oh, man, not the first time. coming up, tim gunn reveals a sex secret. >> and the latest chapter in the demi moore's real-life drama. "the skinny's" next.