K-Fed and Alli work together for custody

Jul 25, 2007, 13:00 GMT

Britney Spears' cousin Alli Sims is to give legal evidence to help Kevin Federline win custody of the former couple's children.

Alli was Britney's assistant until they parted ways recently and she is so concerned about the 'Toxic' singer's mental state she plans to help Kevin gain full custody of their sons, 22-month-old Sean Preston and Jayden James, who is 10 months.

A source told America's OK! magazine: "Alli gave specific instances where Britney couldn't handle having the boys. Kevin was angry at Britney for putting his children in jeopardy and immediately phoned his lawyer to investigate the claims further. He couldn't believe she had gotten so out of control."

Kevin's legal team is currently redrafting the divorce settlement to include Britney's recent public and private problems and has already contacted the singer's lawyers to organise a meeting.

An insider said: "Kevin is worried about Sean and Jayden's safety.

"He had heard bits and pieces of what was going on from Brit's mother, Lynne, and from the bodyguards but has been trying to focus on getting along with her and didn't want to believe she had completely lost it."

It has been revealed that last week Britney, 25, lost the plot during a photo shoot with the US edition of OK! magazine sparking fears she is on the verge of another breakdown.

Earlier this year, Britney's behaviour spiralled out of control. She infamously shaved her head, flashed her private parts on several occasions and attacked a photographer's car with an umbrella.

She later checked into Malibu's Promises rehab centre on the advice of her mother and then manager Larry Rudolph.

(C) BANG Media International