Christina Aguilera -- TWO-FACED
Christina Aguilera TWO-FACED
9/19/2013 9:30 AM PT
Christina Aguilera flaunted her hot new bod last night ... but it wasn't her body people are talking about ... it's her face -- because it looks ... well, different.
Christina's Face
She didn't explain how she did it last night on "The Tonight Show with Jay Leno."
So we gotta ask...