Katy Perry parties with Robert Pattinson, Justin Bieber, Selena Gomez

BEAUTY QUEEN: KATY PERRY

Katy Perry partied with Robert Pattinson, Justin Bieber and Selena Gomez after the premiere of her new movie. After attending the screening of Katy Perry: Part of Me 3D in Hollywood, the group met up at the infamous Chateau Marmont hotel on Tuesday (26.06.12).

The group then travelled in Justin's $200,000 Mercedes Benz minivan to celebrate the opening of David Arquette's new nightclub, Bootsy Bellows.

Despite 18-year-old Justin and 19-year-old Selena being under the legal drinking age in America, the couple enjoyed the evening out with 26-year-old Robert and 27-year-old Katy.

A source told UsMagazine.com: "Rob and Katy are good friends so he was happy to celebrate with her, it wasn't just the four of them, but everyone was close."

Apparently Twilight actor Robert has been keeping in touch with pop star Katy after her divorce from Russell Brand last December.

The insider said: "He's just checking in on her. It's not romantic at all. They're friends."

His girlfriend and co-star in the vampire movies, Kristen Stewart, was unable to join him as she was attending a Balenciaga event in Paris, France and has been busy promoting 'Snow White and the Huntsman'.

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Courtesy: NDTV

Russell Brand 'wants Katy Perry back'

Russell Brand has reportedly sent an email to his estranged wife Katy Perry, asking for reconciliation.

Katy Perry and Russell Brand

The 36-year-old comedian, who filed for divorce from the singer in December 2011 after 14 months of marriage, is said to have changed his mind after seeing photos her at Coachella Festival last month.

Perry, 27, was spotted being affectionate with Robert Ackroyd from music group Florence + the Machine as they watched acts on stage.

According to Grazia, Brand was prompted to admit that he "gave up" on their marriage too soon and that filing for divorce was the biggest mistake of his life.

"Word has it Russell was 'seething with jealousy' when he saw pictures of her with Rob," Contactmusic quoted a source as telling the publication.

"He apparently feels he gave up on their relationship too easily.

"It's fair to say that Russell only wishes Katy happiness but perhaps he should have realised just how special his wife was when he was married to her rather than five months later," the source added.

Courtesy: Gossip @ Times Of India