Christina Aguilera's Britney Spears impression is scarily accurate

Well, they say imitation is the sincerest form of flattery. Pop warbler Christina Aguilera dropped by The Tonight Show with Jimmy Fallon for a round of musical impressions - and the singers she was asked to impersonate were hardly picked at random. Christina You can now watch Christina Aguilera sing This Little Piggy in the style of Britney Spears. What a time to be alive.  First up, Christina had to sing in the style of her Burlesque co-star Cher. How'd she go? If we're honest, her attempt was about 90% Christina with just a slight dash of Cher. She fared better with the second impression, though: Her Mickey Mouse Club co-star and pop rival Britney Spears. After letting out a giggle when Spears' name came up, Christina launched into a note-perfect impression of Britney's unmistakable voice, trademark vocal tics and hiccups and all. You could just tell she'd tried this before at home. She finished the Musical Impressions off with a semi-decent Shakira impression, but really, we all came here to see Christina tackle Britney. Check it out for yourself: