Kevin Federline celebrated his 40th birthday at a Las Vegas strip club.

Kevin Federline

Kevin Federline

The former dancer - who was previously married to Britney Spears - partied up a storm at the Crazy Horse 3 Gentlemen's Club with his wife Victoria Prince over the weekend, TMZ reports.

The couple enjoyed their own VIP area and Kevin showed off his DJ skills as he took to the decks.

Meanwhile, it was recently revealed that Kevin is to seek an increase in child support payments from Britney.

The 'Toxic' hitmaker - who makes a reported $475,000 a show from her Las Vegas residency - currently pays Kevin $20,000-a-month for their sons Sean Preston, 12, and 11-year-old Jayden, an agreement based on a percentage of her income at the time the deal was made, but the dancer's lawyer, Mark Vincent Kaplan, sent a letter to the star earlier this month asking to open up discussions regarding the payment.

A source told E! News: "Kevin is trying to voluntarily revisit a modification of the existing child support number, given that the kids are older and the financial circumstances of the parties are significantly different than when the child support was originally resolved.

"A letter asking to meet and confer on the issue was sent to Britney's representative."

Kevin - who was married to Britney from 2004 to 2007 - wants his child support based on how much custody he has with his sons and also how much money the 'Piece of Me' singer earns, to ensure the boys can live an equal lifestyle with both parents.

Last summer, Kevin - who also has children Kori, 15, and Kaleb, 13, with ex-fiancee Shar Jackson, and Jordan, six, and Peyton, three, with wife Victoria - revealed co-parenting with his former partners has grown "a lot easier" now as they have an established routine in place.

He said: "You fall into your routine and it's really easy now. It wasn't always easy, but it's a lot easier now."