U.S. singer Britney Spears watches the Houston Rockets play the Los Angeles Lakers during their NBA basketball game in Los Angeles, in this March 30, 2007 file photo. A Los Angeles judge questioned Britney Spears and a parenting coach on June 24, 2008 during a hearing into the pop star's child custody case before ordering a change to her visitation status with her two sons. [Agencies]

Britney Spears is furious over her mother's plan to release a book about her. The 'Toxic' singer is reportedly so angry with her mother Lynne Spears' decision to publish the tome - which details both Britney and her sister Jamie Lynn's showbiz lives - she refuses to be in the same room as her.

The disagreement is said to be so severe Britney initially refused to be present when her younger sister Jamie Lynn gave birth earlier this month because she didn't want to see Lynne.

A source said: "Britney was so upset and angry with her mom that at first she refused to be at the birth. She couldn't bear to be in the same room as her. "But when Jamie Lynn found out that Britney might not be in there, she got really frightened and couldn't stop crying.

She begged her sister to reconsider, and at the last minute Britney agreed to come." Britney is so desperate to stop Lynne publishing her memoirs she has even reportedly tried to bribe her.

The source added to Britain's Closer magazine: "Britney feels that just as she is moving forward, her mom is dragging her back. She'd even offered to pay her mom the equivalent of the book money to keep her quiet."