Nat wore Gaga's red lace outfit, completely with red lace mask and red crown (maybe he watched the make-your-own Lady Gaga red outfit video and DIY'ed it?), while Sean got the frilly, feathery white birds nest. Nat shouted out something about wearing soiled panties on your face, and then hilariously teetered off the stage in wobbly Gaga heels.
+ Check out more photos from the 2009 mtvU Woodies, and relive Lady Gaga in the original outfits at the 2009 VMAs after the jump. And don't miss the 2009 mtvU Woodies on Friday, December 4, at 10 p.m. ET on mtvU, MTV, MTV2, and Palladia.