December 15, 2015 8:05 AM EST

Comedian Tina Fey tried out her best impressions of a variety of celebrities on a Tonight Show appearance Monday. Fey launched into the impressions during a game of “First Impressions” where she and host Jimmy Fallon do impressions leaving the other guess who is being impersonated.

“It’s tricky because I stink at impressions and you’re very good at impressions,” Fey said before diving into the impressions.

Fey impersonated Jack Nicholson, Robert De Niro and Sofia Vergara. Tonight Show host Jimmy Fallon imitated Barbara Walter and Morgan Freeman.

Fey, a one-time Saturday Night Live and 30 Rock star, appeared on the Tonight Show to promote her upcoming movie Sisters.

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Write to Justin Worland at justin.worland@time.com.

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