Sean "Diddy" Combs and Kim Porter, his girlfriend of 10 years, have called it quits, with Porter moving into a new Los Angeles home with their children.

A published report said Porter bought a home in Beverly Hills before moving out of Combs' New York apartment last week, People magazine said Tuesday.

Combs' representative denied the breakup was over the artist's relationship with actress Sienna Miller.

"There is literally nothing between them," the representative said.

Porter, 36, and Diddy, 37, are parents of son Christian, 9, and twin daughters D'Lila Star and Jessie James, born Dec. 21. Combs has another son, Justin, 13, with stylist Misa Hylton-Brim. Porter has a teenage son, Quincy, with singer Al B. Sure.

The couple shared a tempestuous history since the 1990s. They broke up in 1999 and battled in court over child support for Christian. Combs dated Jennifer Lopez for two years before he and Porter reconciled in 2003.

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