Ellen DeGeneres is Sofia Vergara for Halloween - wardrobe malfunction included

Ellen DeGeneres and Sofia Vergara have become buddies, probably from working together on their cute Cover Girl ads. And they're good enough friends now that Ellen felt comfortable having a little fun with Sofia for Halloween.

On Wednesday's show (Oct. 31), Ellen dressed up as Sofia, complete with butt-cheek-baring wardrobe malfunction from the 2012 Emmy Awards. Ellen also tries to do a Sofia impression, which is OK, but needs a little work.

Sofia is hilarious when she comes out -- "Your a** ... looks huge." -- and her American accent is pretty funny. And then it's time to dance! Happy Halloween, everybody!