Hailey Bieber let loose at Kylie Jenner’s 29th birthday party. The Rhode founder attended her close friend’s birthday bash Friday, and reposted a wild shot of herself licking a female friend’s backside on her Instagram Stories. The friend’s hot pink sparkly thong was visible thanks to her low-rise jeans and crop top. 12 Hailey Bieber reposted a pic of her licking her friend’s backside on her Instagram Stories, a scene from Kylie Jenner’s 29th birthday party on Friday. hailey bieber/ instagram12 She also shows the work she puts in to achieve her physique.