Hot Or Trashy??? Check Out Blac Chyna's Outfit To Amber Rose Birthday Party (Pictures)

Amber Rose celebrated her 31st birthday last night and threw a costume party at a mansion in LA which was attended by a lot of her friends including Chris Brown, Karrueche Tran, and Blac Chyna. And that's the costume Blac Chyna, who recently split from rapper, Tyga, chose. A sheer nun's outfit. Choi! See more photos from the fancy dress party below...