There have been reports that Britney Spears assistant Shannon Funk is set to detail the bad habits of Britney Spears in a tell all magazine interview, though she denies this. Funk was with Britney for just under a month and many believe that she could seriously damage the fallen pop princess with some damaging tales and a new report claims some cell phone photos.

Britney Spears Assistant Has Cell Phone Photos, Sides With K-Fed

But those tales and pictures may end up as testimony as a report from Star Magazine claims that she has sided with Kevin Federline and may back him in court. Source tell Star that Kevin is seriously unhappy with the final agreement, which dictates a 50-50 custody division of time with their sons, Sean Preston, 22 months, and Jayden James,10 months.

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The magazine notes that he is legally free to fight the ruling - and insiders insist he's intent on doing so ASAP! "Kevin is absolutely dead set on getting full custody of his sons," a friend of Kevin tells Star. "I'm positive he'll be going back to court!"

Now the bombshell - Star reports that this time, K-Fed may finally win full custody, thanks to a potent secret weapon: The pop star's former personal assistant, Shannon Funk, who could tip the scales in Kevin's favor by detailing Brit's bizarre behind-the-scenes antics!

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Funk had been working as Brit's assistant for just 3 weeks when strange reports surfaced that Brit fired her in late July because she suspected her of disloyalty. According to these reports, Funk was threatening to write a tell-all about Brit's wild partying, questionable mothering skills and bizarre behavior. But when Star spoke with Shannon, she denied that she'd been fired or was planning to pen a tell-all. "I'm still Britney's assistant," she told Star.

However, says an insider, "Shannon contacted Kevin's friends at one point - and that gave him the idea that she might rat Brit out. Then Kevin contacted Shannon. She told him she had cell phone pictures of Britney and herself partying - including pictures of Britney acting silly while intoxicated and running around the house barely clothed!"

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That's why Kevin determined to have Funk testify against Brit when he reopens the case! "He thinks it's better to have Shannon tell the court about Britney than just say it himself," the insider adds. "Kevin wants sole custody of the kids and he's determined to get it," says his friend. "To see his kids' safety being constantly jeopardized by an out-of-control Britney is tearing him apart!"
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