What a sexy week it's been for Nicki Minaj! Not only has she taken on the task of compiling a catalog of her Barbz' boobz, she also hit up the set of The Late Show With David Letterman last night to perform "Shakin' It 4 Daddy" with her pal Robin Thicke. We like to think they were singing that one to Dave himself.

It's great to see Nicki attacking the mic on such a high-profile gig, because it showcases to America what we've known all along: this nasty ninja knows how to entertain—and how to steal the show. Watch Robin and Nicki after the jump. More »