January Jones was clearly looking to make an impact when she pitched up at The Tonight Show Starring Jimmy Fallon in this sexy number!
The Mad Men actress was looking pretty fabulous in a black lacy catsuit. The revealing outfit featured several cut-out lace panels, revealing her long pins.
During her time on the show, Jones played a game of giant quarters with host Jimmy Fallon. So for those of you who have no idea what giant quarters is (because we didn't)- its apparently a drinking game.
Meanwhile, her co-star Christina Hendricks has been talking about thongs and fashion nightmares! Yup, you read that correctly.
More January Jones looks? Well, here you are.
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