It's like Alessandra Ambrosio is asking for a wardrobe malfunction!
Unless she plans to take baby steps while keeping her entire torso completely upright, she's bound to show some boob. We wouldn't be surprised if it was both of them by the end of the night. But then maybe that's exactly the supermodel's intention? They say there's no such thing as bad PR, and a nip slip shot of this beauty would surely go viral.