Photo by: Kevin Winter / Getty

Heather Locklear and her rock-star husband Richie Sambora are splitting up, the actress's rep, Cece Yorke, tells PEOPLE.

"After 11 years of marriage Heather Locklear has filed for divorce from Richie Sambora," says the rep. "This is a private matter and there will be no further comment at this time."

In paperwork filed Thursday in Los Angeles County Superior Court, Locklear requests physical custody of the couple's 8-year-old daughter, Ava Elizabeth, with visitation rights for Sambora. The actress cites "irreconcilable differences" as the reason for the split. According to the divorce petition, the couple signed a prenuptial agreement that determines how their assets will be divided.

The couple, who were married Dec. 17, 1994 in Paris, were introduced by Locklear's friend, makeup artist Lisa Christy. Seven months later, Sambora, the guitarist for Bon Jovi, popped the question.

The day after the proposal, Locklear, who was then starring on Melrose Place, proudly flashed her pear-shaped diamond engagement ring from Cartier while attending the Emmys. They soon set up house in Locklear's airy, four-bedroom home in L.A.

Locklear and Sambora in 1994 Photo by: Tammie Arroyo / Getty

This is the second marriage for Locklear, 44, who split from Motley Crue dummer Tommy Lee in 1993 after nearly eight years of marriage. This was the first marriage for Sambora, 46, who previously dated Cher.

Locklear's TV credits include Spin City, Dynasty and T.J. Hooker. She recently starred opposite Hilary Duff in The Perfect Man.