Kevin Federline's, Mark Vincent Kaplan, have obtained sworn affidavits from three former Britney Spears employees - a nanny and two bodyguards - detailing horrific examples, says a source close to the investigation, of Britney Spears's lack of parenting skills, reports Star Magazine!

Britney Spears Tells Her Kids: You Were Both Mistakes

What those affidavits allegedly reveal about Britney and how she treats Sean Preston, 23 months, and Jayden James, 11 months – including ranting “You were both mistakes!� at the tots – are shocking and disturbing, the source adds. And they could prove to be the straw that shifts custody to Kevin!

According to the source, the former nanny claimed that Britney “gives the kids soda sand coffee with cream and sugar. She also lets them sit in soiled diapers for hours until someone else changes them. And she keeps both children up late at night to ensure they sleep late – this includes waking them up if they fall asleep before 11 pm. Plus, Britney doesn’t personally feed the kids – the nanny or bodyguard does.�

But that’s not the worst of it. “When Britney is upset, she yells and screams at the boys and once told them, ‘You were both mistakes!’ She’s called them ‘burdens, a pain in the ass and the reason [your] father left,’� says the source. “Anyone who would tell their child that is heartless. I’m sure Britney loves her children, but she must believe that having kids with Kevin was a mistake.�

Another source says Kevin is also concerned about Britney’s sex life, afraid that she’s been promiscuous in front of the kids.

“Kevin was even told in so many words that Britney was pregnant a few weeks back,� says the second source. “He had a meltdown over this. Kevin feels the people around Britney are looking the other way. Now he’s determined to have them hauled into court to answer to a judge about Britney’s actions involving his kids.�

Kevin’s suspicions about what’s happening at Britney’s house may not be so farfetched, insiders say.
The nanny swears Britney has men over to her house in Beverly Hills all the time, and she introduces them to the boys as their uncles,� says the first source, adding, “Britney does carry on with men in front of the boys, kissing and hugging. She runs around half-naked in front of her kids with the men she has over.�
The source says the affidavits seem to indicate Britney thinks of the boys as “accessories� and that’s she’s more concerned about their appearance than their well-being.

“Britney reportedly doesn’t even know how to brush Sean’s teeth, and they look awful,� says the source. “She tried to whiten his teeth using Crest Whitestrips, but he kept crying. Finally, Britney threw the strips away, telling Sean, ‘Fine, you’ll just have ugly teeth then!’�

What’s even sadder are claims that Britney drinks heavily at night, which usually results in her passing out,� the close source adds, “The nanny also told Kevin and his attorney that she has ‘seen Ms. Spears take pills – they are in prescription bottles.’ But what kind of pills they are is unclear.�

And, the source reports, one of her bodyguards swears that Britney is drinking cocktails out of water bottles. “He says he’s seen Britney take prescription medication and drink. She has wandered through the house naked and in various states of undress, sometimes in front of the boys.� A second bodyguard has sworn in an affidavit that Britney “drinks at all hours of the day,� the source tells Star. “She does drink in front of the boys. She drinks everything she’s got in her bar at home – Patron tequila, champagne, vodka, Baileys, rum, Scotch.�

The bodyguard added that Britney came on to him and demanded that he constantly tell her she’s hot – “but he attributed that to her stress and drinking,� says the source.

As Star has previously reported, Federline, and attorney Kaplan have been gathering material against Britney to prove that she’s an unfit mother and to show that Kevin should have physical custody of the boys. In fact, they filed papers in L.A. Superior Court on August 8, requesting that. A close source says, “It’s more than getting custody of the kids – it’s ‘rescuing them’ in Kevin’s mind.

“He thinks Britney is an unfit mother and wants his children away from her ASAP. He’s convinced her alleged drug use, drinking and out-of-control behavior will result in a tragic accident involving one of his kids if he doesn’t act now.�

Kevin took an aggressive step in his custody battle over the weekend of August 10. He hired Aaron Cohen, a former Israeli army counter-terrorism commander, to serve papers to people in Britney’s inner circle, who Kevin feels have been refusing to cooperate with his lawyers.

“Aaron runs a Hollywood security firm called IMS Security and gets the job done,� says a source. “Kevin is determined that Aaron will serve all of Britney’s pals with court papers, forcing them to give legal depositions in which they will have to answer questions under oath about Britney’s parenting skills, in addition to anything they’ve witnessed regarding Britney and drugs, alcohol or sexual conduct.�

Cohen’s first “raid� took place in the early morning hours of August 12, when he served papers to Britney’s cousin and confidant, Alli Sims, 26.

“All the people around Britney have been protecting her, and Kevin’s sick of it,� says the source. “I think he probably holds Alli responsible – as an enabler who should know better for the sake of the children.�

That Sunday morning, says the source, Cohen’s team watched Alli’s movements and pounced on her as she and Britney’s ex-boyfriend, music producer J.R. Rotem, left a party at a private home in the Hollywood Hills shortly after 2:30 am. “Britney was still in the house and didn’t see this happen,� says an eyewitness, who adds that Aaron Cohen ended up tossing the subpoena – compelling Alli to testify as to Britney’s parenting methods – into the open window of the car she and J.R. were leaving in.

“Britney came out of the party soon after and burst into tears when she found out what had happened,� says the source. She later rejoined Sims and Rotem at her Beverly Hills mansion.

Next on Kevin’s list, say insiders, are family and friends in Britney’s hometown of Kentwood, La. And even though Brit’s mom, Lynne Spears, has been on Kevin’s side, “she’ll probably be subpoenaed as well by Kevin’s legal team, if for nothing else than appearance’s sake,� says the source. “Kevin won’t stop until he gets the children. Britney has stepped way over the line. This is now an all-out war!� And the next battle is scheduled for September 17 in L.A. Superior Court, when K-Fed and his attorney, armed with their affidavits, will argue for modification of the existing custody agreement, a 50/50 split between both parents.

With all this intense drama in Britney’s life, it’s no surprise that another insider claims Britney believes someone is trying to harm her!

“She truly believes someone wants to hurt her,� says the insider. Britney is freaking out over the crates of hate mail she’s been receiving lately, say sources. “Most of the letters are from mothers who say she is such a bad role model that it would be better if she had never been born,� says an insider at her record label. “It’s made her extremely paranoid that everyone is out to get her.�

Britney has hired a force of body guards to protect her and has been studying Krav Maga, a hand-to-hand combat system that was developed in Israel. “Britney said she needed to learn how to protect herself and her kids,� says the insider. “She said she’ s really nervous about the people that are always around her when she’s out in public, and it freaks her out so much that she can’t sleep at night.�

All this is just more ammunition in Kevin’s fight for Sean and Jayden, says a source. “If Britney doesn’t get her act together soon, she will no doubt lose her kids to Kevin,� the source tells Star.

“He’s looking like a knight in shining armor at this point!�