bikinis from target. kate was wearing less than sandra bullock did in "gravity." kate's "sports illustrated" shoot seemed to be channelling "barbarella." not only did jane fonda to a strip tease but the credits maintained fonda's modesty. last year jimmy fallon was interviewing kate when he mused about a final frontier for her next shoot. >> space. >> next year. >> think about this. there's no gravity. >> it's incredible. >> reporter: we know what jimmy and the audience were imagining. >> how does the absence of gravity effect the position of your bosom? do things float? >> i think they don't move, really. >> reporter: america's first female astronaut, sally ride, was once asked if you need to wear a bra in space.