Haute Gossip: Rachael Leigh Cook at Blush, Joan Rivers at Lavo, Jessica Lucas at Tao, Taye Diggs at the Palazzo

It’s stiil bachelorette season in Vegas. “She’s All That” actress Rachael Leigh Cook headed to Blush Boutique Nightclub at Wynn Las Vegas on Friday to celebrate a friend’s bachelorette party. Cook arrived at the club with a group of 10 girls at around 11:30 p.m. The group sat at a VIP dance table drinking Champagne and Grey Goose Vodka with mixers. Cook and friends danced until 2:30 a.m.

The group then decided to continue their party at Surrender Nightclub at Encore Las Vegas, where they danced to the music of resident DJ Steve Aoki.

Over at Lavo at the Palazzo, Joan Rivers was spotted with a group of five friends. The comedienne sipped white wine and had a light snack of tuna tartare and a few bites of the famed Kobe meatball and said Lavo is one of her favorite spots in Vegas. The comedienne is performing through tonight at the Venetian.

Actress Jessica Lucas checked out the club at Tao at the Venetian.  Lucas will be seen in the upcoming NBC sitcom “Friends with Benefits.”

Actor Taye Diggs was spotted checking in at the Palazzo VIP Lounge Saturday afternoon. Diggs was joined by a friend for a guys weekend in Vegas.

Click on the photos below for more scenes from Vegas.

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