Kevin Federline celebrated turning 30 by getting smeared with cake at his birthday party.

He turned up for his big bash in a dapper suit but looked distinctly unstylish when friends plastered his face with the birthday surprise.

However, K-Fed – who is going through a bitter custody battle for the children he had with Britney Spears – didn’t seem too bothered after the incident at Pure nightclub in Las Vegas.

He laughed and joked with guests, and posed for the cameras despite having creamy gunge on his face.

Even another ex, actress Shar Jackson, was invited to the party.

Last night, The Hills star, Audrina Patridge, hosted an evening with the Pussycat Dolls at PURE Nightclub in Vegas.

You would think that Audrina would want to clean up her act a little and put some clothes on after naked pictures of her spread around the internet. But, nope, apparently she has more to show, if that’s even possible.

Here are some pictures of Audrina trying her best to fit in as a Pussycat Doll:

On March 31st, Kevin Federline will be celebrating and hosting his 30th birthday at Pure nightclub in Las Vegas and he wants you to be there.

Not only will K-Fed be hosting the party of the night, but he’s being paid $175,000 to throw the party. Nothing says Happy Birthday more than partying it up with your friends while sitting on a wad of dough.

Yeah…. and he says that he can’t pay his legal bills….Britney Spears’ lawyer just got done arguing in court that Federline has more money than he’s admitting too…interesting. Don’t fill sorry for the guy rolling in cash like that.

It’s also being reported that while K-Fed is partying his ass off in Vegas, he may let Brit have some quality visitation time with sons, Sean Preston and Jayden–this is apparently dependent on how Britney is doing when the time comes and also only if Brit’s dad, Jamie Spears, will be there to monitor the visitation at all times.