The summer party scene was hot over the weekend at the Hard Rock Hotel. Singer Pete Wentz kicked off the weekend with an early birthday celebration at Vanity Nightclub with several friends including members of his band Black Cards and longtime model girlfriend Meagan Camper on Friday night.

Former Miss Nevada USA Sarah Chapman spent the day and night on Saturday at Encore Beach Club and Surrender Nightclub at Encore Las Vegas, joined by a slew of former Miss USA contestants in town for tonight’s Miss USA 2012 pageant.

Comedian Wayne Brady knows how to party in style. The funnyman celebrated his 40th birthday on Saturday night at the Mirage while he was in town performing his show “Making it Up” as part of the “Aces of Comedy” series.

Gretchen Christine Rossi of “The Real Housewives of Orange County” hosted Bling Beach at Tao Beach at the Venetian, giving the girl with the most blinged out swimsuit a $5,000 prize.

Scott Disick celebrated his 29th birthday at 1 OAK Nightclub at the Mirage with friends including Girls Gone Wild’s Joe Francis and 1 OAK co-owner Scott Sartiano on Friday night.

On Saturday night, professional dancer and three-time champion of ABC’s hit reality series “Dancing with the Stars” Derek Hough celebrated his 27th birthday at Tabú inside the MGM Grand.

The Bourbon Room at the Venetian held its grand opening Friday night with a surprise flash performance announcing the newest entertainment residency.  

Celebrating the launch of his new memoir, “Most Talkative: Stories from the Front Lines of Pop Culture,” Bravo television personality Andy Cohen hosted a book signing with more than 200 adoring fans at the Cosmopolitan of Las Vegas on Friday, June 1.   

Maxim Fridays at Tao Beach at the Venetian celebrated the release of the 2012 Maxim Hot 100 with special guest April Rose, No. 82 on Maxim’s list.