Kanye West snubbed his own Grammys after-party.

The 30-year-old hip-hop star - who scooped four awards at the Los Angeles awards ceremony on Sunday - celebrated his success at another bash to the bemusement of his manager and friends who were left waiting for him at Hollywood's Opera/Crimson nightclub.

A source told FOX News: "He went to the Entertainment Weekly bash at the STK steakhouse and lounge. He got swept up and I guess forgot to make it to his own party."

Guests who partied at Kanye's bash included fellow rapper Snoop Doog, actor Wilmer Valderrama, actress Bai Ling and a number of American football players from the Oakland Raiders and San Francisco 49ers.

Earlier in the evening, Kanye paid tribute to his late mother Donda - who passed away last November - in his acceptance speech for Best Rap Album.

The hip-hop star, who performed 'Stronger' and 'Hey Mama' at the ceremony, also took Best Rap Song for 'Good Life', Best Rap Solo Performance and Best Rap Performance by a Duo or Group for his collaboration with Common.

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