Christina Aguilera's impression of Britney Spears is perfect

Christina Aguilera has known Britney Spears for a pretty long time now.

The two pop princesses first met during their days on "The Mickey Mouse Club" back in the early 90s, and they've crossed paths a bunch of times since. (Video via Buena Vista Television / "The All New Mickey Mouse Club")

So, it makes sense that Christina would know Britney pretty well at this point. And she proved just how well during a game of Wheel of Musical Impressions on the "Tonight Show."

"This little piggy ate roast beef, went wee wee all the way home," sang Christina Aguilera on the "Tonight Show."

Okay, wow, that imitation "drove us crazy." We had no idea Christina was so in touch with her inner Britney! (Video via Sony Music Entertainment / Britney Spears)

And of course, the rest of the Internet was pretty impressed too. PopSugar said Christina's musical impression was "just plain perfect."

And a writer for The Huffington Post gushed, "[It] will completely blow your mind."

Of course, Christina totally beat Jimmy hands down after that.

And we think it's safe to say she trumped fellow "Voice" coach Adam Levine's impression of Michael Jackson, too. And THAT'S SAYING SOMETHING. (Video via NBC / "The Voice")

This video includes images from Getty Images.