Christina Aguilera does epic Britney Spears impersonation on Fallon...

A visit to The Tonight Show Starring Jimmy Fallon saw Christina Aguilera impersonating her 90s pop rival Britney Spears with 'This Little Piggy.' 

This was done last night during a game of 'Wheel Of Musical Impressions.' Christina had Britney's nasally vocals down pat, even the quivering tone too. In fact, it was almost as good as Nicole Scherzinger's impression. Hilarious!

Thoughts?