Christina Aguilera Performs @Perez's Bday Bash

From all indications, Perez had quite the birthday party. I can't stand him, but I would have went. No gift! Haha.

Perez bashed Christina for months, calling her a hot tranny mess (which wasn't totally undeserved, but still) and boycotting her music and performances while she was promoting Back to Basics. Yes, the fans remember! But, lately he's changed his tune; showing excitement for the work she's done with Sia for her upcoming album and calling her "faboosh." Guess he knew he couldn't continue to trash her if she was on the bill. I'm sure Christina's people knew about all the s*** Perez has talked about her in the past, but this way she gets good press for the next album. Smart woman.

Check out the tail-end of Christina performing Lady Marmalade (one of her many gay anthems) at Lavandeira's birthday bash. Not gonna lie, it's the best I've heard her belt in a long while and I've seen every live performance.