Kim Kardashian is notoriously not a big drinker — but it appears she may have indulged on her 40th birthday! The SKIMS CEO showed off her dance moves with best friend LaLa Anthony in a hilarious new video posted on Saturday, Nov. 7. “I’ve never seen you like this ever in your life,” LaLa said at the beginning of the clip, which showed the pair in an outdoor hut on the private island Kim rented.