Celebrities attend Kendall Jenner's 20th birthday party at The Nice Guy nightclub in West Hollywood, California on November 2, 2015. Kendall's birthday officially started at midnight and many of her close friends and family were with her to celebrate, including Justin Bieber who was fresh off of probation!<br /> Pictured: Justin Bieber
(November 3, 2015 - Source: FameFlynet Pictures)