The Best Celebrity Impressions Ever

Christina Aguilera totally killed her Britney Spears impression on The Tonight Show With Jimmy Fallon, which got us thinking . . . What other celebrities do great impressions? We dug up some of the all-time best and rounded up some of our favorites, from Matt Damon as Matthew McConaughey to The hottest celebrity gossip, entertainment news, and pop culture video! Our POPSUGAR hosts bring you the latest celebrity updates, exclusive celebrity interviews, fun TV recaps and movie reviews, and pop culture mash