Despite Wheatley's somewhat complicated relationship with his human form, he seems to have deemed it appropriate to use it tonight, probably so that he can partake of tiny sandwiches.

Unfortunately, he has not learned from last year insofar as gender-specific formal wear was concerned, as he is reprising the blue dress. It might have something to do with the fact that he enjoys the nice breeze on unmentionable areas. What a beautiful princess he is.