Earlier this month, Katy joined Rihanna on holiday in the latter's native Barbados.
Katy and Travis split in December after over a year together. I keep thinking about if I had to go through it again and how s**tty it would be.'We were moving way too fast.
Five months after their high-profile split, Katy Perry has reconciled with ex-boyfriend Travis Mc Coy.
The couple have decided to give their relationship another try after previously blaming the split on their busy schedules.
Dressed in a gold shimmering mini dress and Christina Louboutin heels, Katy looked like a showgirl as she joined Gym Class Heroes frontman Travis and singer Rihanna at the bash.
Rihanna was her usual flamboyant self in a white trouser suit and plunging leopard-print shirt and aped her biggest hit Umbrella by carrying the device as she arrived at the club on a rainy night in New York.
The pop star was by the Gym Class Heroes frontman's side last night as they partied at New York club Mr West last night.
The I Kissed A Girl singer was the guest of honour at party hosted by People magazine to celebrate the release of her new video Waking Up In Vegas.
If you want your pop star with a bit more bite, though, her angry woman-scorned track “Circle the Drain” also surfaced today, and it’s a not-so-subtle jab at her ex Travie Mc Coy.
Katy's special night marked the second time this week she has been partying with her new friend Rihanna.
On Monday, the two joined a host of stars at the Metropolitan Museum of Art's Costume Institute Gala.
Party pals: Rihanna (L), pictured leaving her hotel for the club, and Katy have become close friends in recent weeks On stage in January, Katy told the audience she was still hurting over her split from Travis: 'It hurts right now. You don’t really want to move on, but you have to because they don't give you any choice.'But a few weeks ago, it appeared the pair couldn't live without each other and have decided to give their relationship another try. I was being juvenile about the entire thing.'Now it's easy breezy.
If you want Katy Perry looking sweet and lovely, check out her just-dropped “Teenage Dream” video.