Ashley and Mary-Kate Olsen
08/01/2011 at 11:00 AM EDT
and Ashley Olsen
headed to Las Vegas for a friend's bachelorette bash that started with dinner – and ended in the club. The ladies shared a feast at Yellowtail Japanese Restaurant & Lounge inside the Bellagio, where they dined on signature dishes – such as Big Eye tuna pizza – prepared specially by the restaurant's executive chef. After dinner, they headed to Gold Boutique Nightclub & Lounge – celebrating in true Sin City style. According to an onlooker, they were requesting songs from the deejay, and sang and danced along.
enjoyed her own girls' night out – in Hollywood. The actress, who recently cut her hair for a new movie
, headed to Tru Nightclub (a favorite haunt) and spent the night dancing with a gaggle of girlfriends.
and fiancée Shannon Tweed
shared an intimate lunch at Dukes West Hollywood sans kids. According to an onlooker, the two were "very affectionate with each other" and were also very friendly with their waitress. The dressed-down couple also kept things light and healthy – an egg white omelet with chicken and veggies for him, and a vegan breakfast burrito for her.
Chord Overstreet and Emma Roberts
enjoyed a romantic weekend in the Hamptons together. On Friday, they helped Andy Roddick
celebrate the launch of his new Lacoste tennis fashion line at Nobu at Capri in Southampton, N.Y. The next day, the couple hit up the sales during a shopping trip at the Super Saturday 14 Benefit for the Ovarian Cancer Research Fund in Bridgehampton, N.Y. The pair, who sported similar shades also rode a Ferris wheel
By MARK GRAY, JEFFREY SLONIM, DAHVI SHIRA and JESSICA WEDEMEYER