Stephen Colbert's star-studded farewell: Paul McCartney, Paul Rudd, Drew Barrymore, and more stars turn out

Paul McCartney showed up at the afterparty for the finale of 'The Late Show with Stephen Colbert' and kept things really low-key. He wore a simple blue coat with matching blue pants, keeping the look clean and casual. The ex-Beatle also opted for a denim shirt, a white undershirt and a matching pair of denim sneakers.

Paul Rudd showed up at Stephen Colbert's afterparty and made sure he was part of the vibe. Even without being the center of attention, he still carried the easy main-character energy. He wore a bluish grey coat with a white shirt, a matching tie, and black formal shoes. The look was simple but sharp. He looked as youthful as ever, keeping things effortlessly stylish at the NYC celebration.

Drew Barrymore showed up at 'The Late Show with Stephen Colbert' afterparty looking casual but chic. She wore grey pants, a white T-shirt, white canvas shoes, and a blue short jacket. She added a cap and a satchel, keeping the look simple but classy. The '50 First Dates' actress looked as young and fresh as ever as she headed towards the celebration.

Gayle King looked relaxed but stylish during the night out. She wore a long white outfit with multi-colored straps. The TV personality layered it with an oversized cardigan coat featuring a bold zigzag print design. She finished the look with an orange bucket bag and heels. While Gayle kept her look simple, she made sure her ensemble was eye-catching without trying too hard.

John Oliver wore a blue coat, blue pants, and a grey T-shirt, keeping his style clean and casual. Colbert's fellow television host arrived at the party with his wife, Kate Norley, and kept the energy calm and easy. The night was not just about Stephen Colbert’s send-off, but also a chance for Oliver to reunite with his friends and contemporaries.