Britney Spears serves papers on mother Lynn Spears

Britney Spears reportedly delivered legal paperwork to her mother yesterday. The troubled singer - who was reported to be planning to file a restraining order against mother Lynne earlier this week - arrived at the set of her sister Jamie Lynn's California TV show and handed her mother two white pieces of folded paper. In a video obtained by Splash news, Lynne looked stunned as she read through the paperwork, and had a heated exchange with Britney during which the 'Toxic' singer threw her hands up in the air. Britney waved and smiled to photographers as she returned to her car.The 25-year-old star allegedly visited her attorney to make enquiries about the order last week in an attempt to keep Lynne away from her two sons.The paperwork allegedly claims Lynne is abusing prescription pain medication and should not be allowed to see 21-month-old Sean Preston and nine-month-old Jayden James. Britney is said to blame Lynne for forcing her to enter rehab earlier this year to seek help for her alleged alcohol addiction and post-natal depression. She is also said to be livid her mother sided with her estranged husband Kevin Federline during the couple's custody battle.The Los Angeles Superior Court says they have no knowledge of any papers filed by Britney. Meanwhile, Kevin is delaying signing final divorce papers over concerns for Britney's recent erratic behaviour. A source told People magazine: "Britney's attorneys are anxious to see Kevin sign off on a divorce. But Kevin and his lawyer Mark Vincent Kaplan are dragging their heels out of concern over reports of Britney's post-rehab partying."Kevin's camp want to make sure the divorce document makes it simple enough for Kevin to downsize Britney's access to her kids the next time her behaviour troubles him."Kaplan refused to comment on the couple's divorce.