Jon Hamm and Casey Affleck pull off casual chic as they arrive at a pre-Grammys party in Los Angeles

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Jon Hamm and Casey Affleck looked like buddies as they attendedMike Dean and Jeff Bhasker's pre-Grammys party in Los Angeles on Friday.The Mad Men star, 51, stepped out in a light brown jacket over a white t-shirt and a pair of black jeans.The actor also walked in brown boots and wore stylish thick-framed glasses.

Star-studded:Jon Hamm, 51, and Casey Affleck, 46, looked like buddies as they attended Mike Dean and Jeff Bhasker's pre-Grammys party in Los Angeles on FridayHamm's salt and pepper hair was combed over neatly to the right, and he sported a few days worth of stubble on his face.Affleck, 46, kept cozy in a dark blue long-sleeve sweater.

The Manchester By The Sea star wore a pair of light blue jeans, cuffed to his ankles, and a dark red beanie over his brown hair.While pictured with the two when they were walking together, Hamm's new leading lady Anna Osceola, 33, reportedly attended the event as well.

Comfort and fashion: Hamm wore a brown coat over a white t-shirt and pants while Affleck donned a pair of blue jeans and a long sleeve blue sweater Big step:Hamm and Anna Osceola (who joined them) made their red carpet debut at the Mercedes-Benz’s Academy Awards viewing party and the Vanity Fair afterparty during Oscar SundayHamm and Osceola made their red carpet debut at the Mercedes-Benz’s Academy Awards viewing party and the Vanity Fair afterparty during Oscar Sunday.The couple first started dating in early 2020 though they met while filming the series finals of Hamm's hit television show back in 2014.While Hamm reportedly had his girl at this side during the evening, it's unclear whether or not Affleck's love Caylee Crown made it to the event.The two packed on the PDA on Sunday atDarren Dzienciol & Richie.