Perez Hilton — The celebrities were out in full force last night for the premiere of the Michael Jackson documentary, This Is It. Adam Lambert, Katy Perry, Will Smith, Jennifer Lopez, Paula Abdul, Neil Patrick Harris, Ashley Tisdale, David Cook and Jennifer Love De... more info

MTV.com News — David Cook, Ashley Tisdale and others walk the red carpet, while the crew for MJ's planned comeback shows offer behind-the-scenes revelations.By Jocelyn Vena, with reporting by Sway Calloway and Tim Kash David Cook Photo: MTV News Fans and... more info

MTV.com News — The reggaeton duo, Lady Gaga, Paulina Rubio and Panda take home Lenguas for 2009.By Lisa Gonzalez Wisin Y Yandel and 50 Cent perform at Los Premios on Thursday Photo: Jeff Kravitz/ FilmMagic LOS ANGELES — Wisin y Yandel scored big at Los... more info

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People.com — • Ashley Tisdale got a hand in the gym – from her personal trainer. The actress sported gray workout clothes as she worked out with weights and focused on strength training at Equinox West Hollywood. She also sipped water and listened intently... more info

Perez Hilton — We were not really feeling the whole "pop rock" thing Ashley Tisdale came out with for the first single off her sophomore album. That's just not her! Thankfully, though, for her second single The Tiz is back and she's doing pure dance pop, where she ... more info

The Newsroom — Here's what's happening with your favorite stars like Kylie Minogure, Ashley Tisdale, Lady Gaga and Paris Hilton. more info

Perez Hilton — Talk about staying in the good graces of your boss. Disney tween stars Miley Cyrus and Ashley Tisdale took to their Twitters to discuss their plans for Halloween. Just because they are too old to trick or treat (and rich enough to buy a candy factory... more info

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People.com — Watch how the Extreme Makeover: Home Edition guest star reacts when a little critter gets too friendly more info