The Late Show with David Letterman New York rain Christina Aguilera hot outfit red shoes

Christina Aguilera has been promoting the heck out of her new album Bionic despite the less than stellar reviews, and we snapped her outside of Letterman last night in this sexy onesie. It's not like we're beating the Gaga thing into a dead horse -- when Miley rocked her racy one-piece in Madrid last week, we made the same comparison! It's just that Gaga was the star who started the trend of wearing stuff like this in public.

But imitation is the sincerest form of flattery, so is Xtina trying to tell us something?