Haute Event: Chelsea Handler, Lo Bosworth and More at Tao and Lavo on Saturday

Labor Day weekend festivities continued on Saturday at Tao Beach at the Venetian as LMFAO took over the deejay booth for the packed pool party. The always lively duo and their Party Rock Crew kept the crowd entertained, surprising partiers with an impromptu performance of their hits “I’m in Las Vegas B***H,” “Get Wild” and “Shots.”

Checking out the scene was Lauren “Lo” Bosworth, who accessorized her Tart dress with playful Party Rock gear. Bosworth, who is launching her lifestyle Web site www.thelodown.com, kept cool playing with water guns. She was joined by her sister Erin, her boyfriend Scott Hochstadt and Stephanie Pratt in a cabana where they snacked on crispy rice from the Tao kitchen.

Last night at Tao Asian Bistro, Chelsea Handler had a pre-show dinner in the restaurant’s private dining room. The group of 25 included Chuy Bravo and Brad Wollack from “Chelsea Lately.”

Bosworth, Pratt and a group of friends dined under the watchful eye of Tao’s Buddha. Lobster wontons and sea bass were favorites at the table. After dinner, Pratt headed to see Handler’s show and then returned to join the group in a sky box in the  club.

LMFAO and the Party Rock Crew fueled up for their nightclub hosting duties with dinner and Ciroc cocktails.

Also spotted in the dining room was Chris Mintz-Plasse, who played McLovin in the movie “Superbad.” After enjoying selections from the chef he headed upstairs to the nightclub. Once there he got on the mic to introduce DJ Vice, sending the crowd into a frenzy.

Nicky Hilton and David Katzenberg stopped by the nightclub to check out DJ Vice and LMFAO, as did Will.I.Am and Apl.de.Ap from the Black Eyed Peas. Will stopped by the deejay booth to visit with Vice and then took over a dance floor table stocked with Ciroc and Patron, staying until 4:30 a.m.

DJ Vice and LMFAO kept the holiday crowd energized, with LMFAO giving a surprise four-song performance, wowing the crow with their hits.

Spotted in the club at Lavo at the Palazzo was Angelina Pivarnick, who was on MTV’s “Jersey Shore” for several episodes before getting fired from the T-shirt shop where the cast worked and then being kicked off the show.

For more action from Tao and Lavo, click on the photos below. For Lo Bosworth’s Web site launch, click here.