After a painful public split from Justin Long last summer, Drew Barrymore decided to gather her girlfriends in celebration of her 34th birthday. The single starlet joined her Whip It! co-stars Ellen Page and Kristen Wiig at The Palazzo in Las Vegas on February 21, where she stayed in the swanky 3,000-square-foot Penthouse Suite overlooking all of Sin City. Dressed in a short black sequined frock, Drew and fellow birthday girl Ellen, who turned 22 on the girls’ night out, got the party started with dinner at LAVO in The Palazzo and were later surprised with cakes: pink marble covered in daisies for flower child Drew, and cupcake cones for Ellen. After the meal, the party pals headed to LAVO’s nightclub, where they sipped Red Bull and champagne. “They got so excited for ’80s classic dance songs. Ellen danced on a banquette all night!” an onlooker tells In Touch. Looks like the ladies weren’t afraid to usher in a new year!