Leighton Meester, Kanye West and Minka Kelly at Nylon Magazine Party

'Gossip Girl' actress Leighton Meester had a star-studded party and dinner presented by Diesel to celebrate her Nylon magazine cover. She was joined by 'The Roommate' co-star Minka Kelly and 'Gossip Girl' pals Jessica Szohr and Michelle Trachtenberg at the W New York Downtown Hotel on Tuesday evening.

Perhaps the most surprising appearance came from rapper Kanye West, who apparently "randomly showed up" to her soiree, sources tell PopEater. He kept a low profile, even though the atmosphere inside the party felt like there was a gigantic elephant in the room.

Russian model Irina Shayk, who starred in West's 'Power' video and even had a mention in his new song 'Christian Dior Denim Flow,' rounded out the guest list. Shayk seemed to enjoy herself, sans footballer beau Cristiano Ronaldo. She and West seemed friendly, so perhaps there's another collaboration in their future.