Tabu

 Image by wenn.com

Spring is officially here and the stars have come out of hibernation. It was celebration this weekend as TV star Michael Imperioli was spotted partying at club TAO, while Emmy nominated actress Jenna Fischer from “The Office” was spotted enjoying dinner at Strip House and partying at Prive with family and friends.

Playboy Playmate Sara Underwood celebrated her 25th birthday in style at Tabu Ultra Lounge in MGM Grand.

Back in Los Angeles, Queen Latifah brought U-N-I-T-Y with some of the biggest stars in Hollywood. The party sponsored by Cover Girl Queen Collections brought out Paris Hilton, her ex-BFF Kim Kardashian, Lil Kim and Lindsay Lohan among others. Queen Latifah even ended the star studded night with a special performance!

Speaking of performances, Mark McGrath entertained the crowd at "Wasted Space" at the Hard Rock Hotel in Las Vegas while across the hotel rapper Pittsburgh Slim and Fonzworth Bentley put on their own show at “Body English.”

Special props to the Hard Rock Hotel & Casino, who turned off the exterior lights, including the property’s iconic guitar, to help raise awareness about climate change during Earth Hour 2009.

Back to la la land, where the big talk wasn't the environment, but films. Mary Kate Olsen helped celebrate the NY Line-up for the Tribeca Film Festival 2009 at the W Hotel and Residences in Hollywood. Andy Garcia and Aaron Yoo also attended to show support.

Across town, Entourage star Adrian Grenier was spotted without his entourage at club Bardot in Los Angeles while E! The Daily Ten's cast celebrated their 3 Year Anniversary Celebration at ADCB lounge at the Mondrian hotel. That's the party roundup from Hollyscoop!