Haute Event: Mary-Kate and Ashley Olsen at Gold; Wynter Gordon Performs at The Bank; Mark and Samantha Ronson ...

Iconic twin sisters Mary-Kate and Ashley Olsen were in Las Vegas for a friend’s bachelorette bash last Friday night. The girls started the night enjoying a Japanese feast at Yellowtail Japanese Restaurant & Lounge at Bellagio prepared specially by Executive Chef Akira Back. The meal included the restaurant’s signature dish, the Big Eye Tuna Pizza.

Following their meal, the girls hit the Strip, heading to Gold Boutique Nightclub & Lounge inside Aria. According to an insider, “The girls celebrated their friends bachelorette party Sin City style, dancing and requesting songs from the DJ and singing along their tracks came on.”

Also on Friday night, having teamed up with the likes of David Guetta, Afrojack and Flo-Rida, pop sensation Wynter Gordon performed her chart-topping hits “Body Talk” and “Til Death” off her debut album “With Music I Must Die” for a packed house at Sin City hot spot The Bank Nightclub inside Bellagio. According to eyewitness reports, Wynter looked adorable on Friday night in a cropped, midriff-exposed yellow polka-dot tee and white baseball cap. The songstress was overheard telling one party-goer, following her energetic performance, that she loves fashion and that her favorite fashion icon was none other than “Sex & The City” designer Patricia Field. Wynter also mentioned that she will be heading to the Big Apple for the upcoming Fashion Week and she’s most excited to see Jeremy’s Scott’s presentation while she’s there. After a few drinks at her VIP table, Wynter sadly had to retreat to her hotel suite as she was heading back to LA early the next morning to film her upcoming music video for her next new single “Buy My Love.”

Mary-Kate and Ashley Olsen weren’t the only siblings celebrating a recent engagement this weekend. On Sunday night, music producer and DJ Mark Ronson headed to The Bank Nightclub to celebrate his bachelor party with close friends and sister Samantha Ronson. The pair celebrated with bottles of champagne while dancing to the sounds of The Bank’s deejays Karma and David Christian.

Click on the photos below to enlarge.

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