Palms Resort Casino

Ke$ha put on a killer show at the Pearl Concert Theater at the Palms Casino Resort in Las Vegas. The pop sensation loves Vegas so much that she partied the night away at Bang! Tuesdays inside Moon Nightclub.

We're told the "Blow" singer chilled with a group of friends in the VIP booth drinking Ketel One Vodka all night long. Holla!

Find out which rap star was seen getting close with Ke$ha at Moon ... after the jump.

Britney Spears is freshening up her music with a little help from her friends. After recently remixing "S&M" with Rihanna, Brit is giving her fans a new version of "Till The World Ends."

Ms. Spears' touring partner Nicki Minaj is lending some quirky lyrics to the catchy beat. Check out these lyrics:

"Chimpanzees is hatin', but I take it all in stride/ Put her in a jungle with bananas on the side/ Told you they'd revive your career, but somebody lied/ I ain't talkin' poultry when I say this chicken's fried."

Um, ok. Also featured in the remix, the song's writer Ke$ha. With these three artists, there's never a dull moment.

Listen to the "S&M" remix ... after the jump.

We all know Ke$ha's a little rough ... her hair's kinda matted, she brushes her teeth with Jack, her clothes usually look a little, uh ... unwashed. But even though K looked a bit scruffy yesterday in New York, she kinda looked better than usual!

With a metallic tunic top, leggings and cowboy booties, girlfriend almost looked ... dare I say it ... cute!

Though the studded belly bag's a bit much. For every fashion "Do" on Ke$ha, there's always at least one fashion "Don't!"

Ke$ha has a unique idea on how to celebrate her and Britney's chart-topping singles "Blow" and "Till the World Ends" -- by "skinny dipping" together!

Ke$ha says the naked swimming would ideally take place at a big bash they'd throw together. "It would be a dress-up-like-Ke$ha-or-Britney party," the singer said. "Either her place or my place, it doesn't matter."

The LA native, who recently moved into a tricked-out crib in Nashville, suggests her new pad would be the perfect place for a little nude swimming party. "I have a small, salt-water pool that has laser beams in it and a stereo so you can be under water listening to music."

Although Ke$ha and Britney may not know each other personally, they do have a pretty interesting connection -- see what it is ... after the jump!

Ke$ha has decided to postpone her upcoming concerts in Japan due to the tsunami disaster.

The pop star released the following statement:

"My heart is with Japan right now through this disaster and these hardships. I genuinely don't think right now would be appropriate timing for me to perform in Japan given the content and the spirit of my show, which is all about feeling exuberant, rowdy, and wild.

I plan to bring my party there and to that part of the world when we are all ready to dance and Get $leazy together again. In the meantime I am going to do everything I can to help relief efforts and I encourage everyone in the world to do the same."

Kesha's Get $leazy tour had four scheduled shows in Japan. The rescheduled dates have not been announced.

Find out where the singer's latest single Blow ranks on the charts ... after the jump.

Who knew Avril Lavinge was a Ke$ha fan? The 26-year-old punk princess performed the Blow singer's hit song Tik Tok while stopping by BBC Radio 1's Live Lounge.

Avril, who was there to promote her new album Goodbye Lullaby, tweeted the following after the performance:

“Thank you to my little black stars for being up so bright and early with me to support the #Goodbye Lullaby release."

Also in the mood to sing someone else's song ... Katy Perry. While on her California Dreams Tour, Russell Brand's wife covered Lady Gaga's Born This Way. Love this acoustic version!

See Avril's newest video for "What The Hell" ... after the jump.

Ke$ha is teaming up with LifeStyles condoms to promote safe sex on her latest tour, but don't expect to see her face on the actual condom wrapper ... which is what has been widely reported.

The company tells us they won't be putting the Blow singer's mug on the wrapper because "We don't want to damage the actual product."

Tammy McGriff, Quality Assurance Manager for Lifestyles parent company Ansell, reveals to X17online exclusively:

"It's true. We are working with Ke$ha for her entire tour with the exception of her Australia concert. Her photo will not be on the actual condom wrapper. That report is incorrect. Ke$ha's picture will be placed on a matchbox-like folder ... and the wrapped condom will go inside. We're packaging the product now."

McGriff says this isn't the first musical artist they've worked with. She tells us their collaboration with 50 Cent was very successful and "brought them great press."

Sex sells, but celebs on condom packaging sells even more!

Here what Ke$ha told Billboard magazine about her customized rubbers ... after the jump.

Ke$ha is sexing it up in her new video for Blow and her leading man is none other than Dawson's Creek star James Van Der Beek. So random, yet brilliant!

The out-of-this-world video features unicorns, rainbows, guns and the 23-year-old pop star showing off her lady lumps. Mr. Van Der Beek even pulls a bra out of his shirt! You'll have to watch the insanity to understand that one.

At one point, Ke$ha refers to the 33-year-old sexy actor as "James Van Der Douche." His response ... “I don’t appreciate you slander-beeking my name, Ke-dollar sign-ha." Loves it!

Check out a much-younger James Van Der Beek from his Dawson's Creek days (with Katie Holmes)... after the jump.