Britney Bounces Back into Superstardom

“Extra” caught up with Britney Spears in New York on Thursday, where a sexy, black-clad Brit beamed as she gears up to battle Kevin Federline in divorce court.

K-Fed fired back at Brit's divorce papers Wednesday night, revealing that he wants custody of the kids.

But late Wednesday night, Kevin forgot about his children, as he partied and battled over the babes of Chicago.

We spotted the Fed dirty dancing with a Britney look-a-like on stage at the House of Blues, where they had to give tickets away to fill the small venue.

Even so, fans told “Extra” they didn't get their money's worth.

“It was the worst show I've ever seen!” the fans said.

At one point, K-Fed yelled to the crowd, “You know I'm a free man, right ladies? You want to dance with a pimp?”

Later, we spotted the free bird heading into an after party, where Kevin said, “I'm going to freestyle this drink down my throat.”

Now, we've got the “brokenhearted” Kevin's all-new interview with Blender.com just before the split, where K-Fed bragged about his rap success.

“I'm not doing this for money. Money is good, but I got money,” he dished.

But if that statement is true, why is Kevin going after Britney's mega-million dollar bank account?

In all-new court documents obtained by “Extra,” Mr. Britney Spears is asking the court for spousal support, and that's not all.

As “Extra” first reported, Federline may challenge the couple's pre-nup. He's also seeking sole custody of their young children, Sean Preston and Jayden James.

On Thursday, Kevin's attorney, Mark Kaplan, told us his client won't be intimidated.

“Kevin is prepared to go the distance in order to do what he feels is necessary to protect and safeguard the children,” Kaplan said.

If he is granted custody, this will make four kids for Kevin, who already has two little ones with actress Shar Jackson.

An emotional Shar recently opened up on “The Dr. Keith Ablow Show” about her split, revealing that the tabloid stories took an emotional toll on her daughter.

“'Mommy, why did Kevin do this?'” a teary Shar shared of her daughter's inquiries.

While Kevin wants to safeguard his children, his longtime friend Ralph Johnson is trying to safeguard K-Fed's reputation.

“He had tremendous respect for his wife; he loves his wife,” Johnson said.

But it seems the world loves a single Britney, who's looking hotter than ever!

Britney is already morphing back into the sexy starlet that shot her into superstardom, and she has already lost more than 25 pounds in only two months!

So how did she do it?

Us Weekly reports that Britney lost the weight in one month by splitting cardio and weights, exercising to motivational music and eating six mini-meal each day.