Photos of John Mayer, Rihanna, Adam Lambert, Mariah Carey, Taylor Swift, Justin Timberlake, Justin Bieber At Event in LA 2009-12-09 06:00:00

JT, John, Taylor and Rihanna All Come Out For Music and VEVO

Some of the biggest stars of the music world from all different genres came together in NYC last night to celebrate the launch of VEVO. Justin Timberlake posed with John Mayer, who recently shared his ideas on how to get away with secret texts. Taylor Swift posed in her LBD while Taylor Lautner was elsewhere in the city preparing to host SNL and releasing the first cute promo. Rihanna smiled big after a publicly trying year and perhaps could give some advice to Adam Lambert who has had his share of controversy, though he's been asked to perform on the finale of SYTYCD. Meanwhile, Nick and Mariah just looked smitten as usual.

There was also time for some performances during the party including Bono and Lady Gaga who was a little more toned down than when she met Queen Elizabeth in London the night before. John Mayer also took the stage and hugged Taylor Swift as his new album featuring a duet with the country starlet climbs the charts. Even up-and-comer Justin Bieber got in the fun, posing with Shania Twain. There were a bunch of congratulations to be handed out to the group, many of who were nominated for Grammys last week.

LOTS more photos including Lady Gaga, Pete Wentz, Justin Timberlake, and Mariah Carey so read more.

Images include: John Mayer, Rihanna, Adam Lambert, 50 Cent, Taylor Swift, Sheryl Crow, Shania Twain, Mariah Carey, Justin Timberlake, Justin Bieber, Ciara, Lady Gaga, Clive Davis, LA Reid, Young Jeezy, Nick Cannon, Bono, Pete Wentz, Mary J. Blige