Earlier this week, Kate Upton opened up to E! News about her super-sexy bikini scene in her new film The Other Woman, saying her body could have looked better. And now, the 21-year-old Sports Illustrated supermodel is revealing she wasn’t a hundred percent comfortable frolicking around in a skimpy two-piece for the movie cameras (seriously!). During a visit to GMA Wednesday with costars Cameron Diaz and Leslie Mann, Upton said, “This was my first movie role and these two supported me every step of the way. When you’re filming a bikini scene nobody’s wearing a bikini, it’s only you and 60 crewmembers. And these two saw that I was feeling a little uncomfortable, because anyone’s uncomfortable when that many people are staring at you.”