'Ozark' star Julia Garner does A+ impressions of Britney Spears and Gwen Stefani

Impressions are a risky business. Unless you get them absolutely spot on, there's always the chance they might come off a little cringey.

Luckily, when Ozark star Julia Garner appeared on The Tonight Show on Monday, she absolutely nailed hers: a croaky Britney Spears and a very breathy Gwen Stefani (jump to 3:15 in the clip...