Kim Kardashian Celebrates 42 With a Revealing Snap!

Kim Kardashian is celebrated her 42nd birthday this weekend by inviting her closest friends on a little trip to Vegas.

Plans changed when Kim’s private jet was unable to land in Sin City due to weather concerns and the gang made their way back to LA.

Instead of dining at the high end restaurant Carbone and watching Usher perform live in Vegas, Kim and her friends rode around in a party bus taking Jell-O, ending up at In-and-Out burger!

Kim kept her fans updated throughout the night and shared a revealing snap she shot while riding around in her party bus, showing off some serious armpit action..

See more from Kim’s wild 42nd birthday in the gallery!