Angry Britney Spears in Rehab---Again!

An appearance in family court sought by Kevin Federline amid a child custody dispute with Britney Spears was canceled Thursday after she entered a rehabilitation program at Promises Malibu.

Last week, Spears sought treatment at a center in the Caribbean but checked out after a day. Spears and Federline reportedly agreed Wednesday night that he would keep their two young sons while Spears was in rehabilitation, a program that takes between 30 and 45 days. Photos surfaced showing Britney attacking an empty car with an umbrella on the same evening.

Britney was furious to be followed by photographers as she attempted to make contact with Federline. Federline sought spousal support and sole custody of Jayden James, 5 months, and Sean Preston, 17 months, after Spears moved to end their two-year marriage in November, but a temporary order issued Feb. 1 granted joint custody through this month.