It's no secret that Tina Fey is one of the funniest women in Hollywood right now, and now she's gone one step further and proved she's a stellar impressionist too! Sure, her Robert De Niro could use a little work, but her Sofia Vergara was on point.

Tina FeyAs if we needed another reason to love Tina Fey

The 'Saturday Night Live' comedienne played First Impressions with Jimmy Fallon on 'The Tonight Show' with hilarious results. While Fallon mocked her generally terrible ability to mimic, even he couldn't deny that her albeit brief impression of 'Modern Family' star Sofia Vergara was practically faultless. Plus, her Elmo voice is one of the best we've ever heard. Still, Jack Nicholson wasn't bad either considering it's hard for a woman to reach that vocal register.

More: Watch the trailer for Tina Fey's new movie 'Sisters'

Fallon himself is well known as a pretty exceptional impressionist himself, something that he proved on the show with his Morgan Freeman voice. He's done other variations of the same game in the past, notably with Seth Macfarlane where he showed off an excellent Pee-Wee Herman to Macfarlane's scarily accurate Liam Neeson. Macfarlane also does Alan Rickman, though he's no match for Benedict Cumberbatch who actually sounds more like Rickman than Rickman does. Cumberbatch also shocked Harrison Ford with his Chewbacca impersonation on 'The Graham Norton Show' and don't even get us started on his MTV impression wheel that saw him nail Michael Caine and Owen Wilson.

Watch Tina Fey's Sofia Vergara impression and more here:

Another actor incredible at impersonations is, of course, Tom Hiddleston, who bravely performed an impression of Robert De Niro in front of De Niro himself on 'Graham Norton' and has in the past wowed us with the likes of Al Pacino, Chris Evans and Christopher Walken. Though, no-one does Christopher Walken quite like Bradley Cooper.

A close contender is Kevin Spacey, though, who has also previously appeared on Jimmy Fallon for his 'Wheel Of Impressions'. As well as Walken, he was spot on with Johnny Carson, Michael Caine and Bill Clinton.