Hailey Bieber marked Kylie Jenner's 29th birthday celebration with a series of candid posts on her Instagram Stories. Among the shared content was a playful, albeit risqué, photo of Bieber licking a friend's backside.

The image, originally posted by influencer Devon Lee Carlson, showed Bieber wearing a tiara while leaning over a marble counter. The friend in the photo, whose face was not visible, was also seen in low-rise jeans and a crop top, with a bright pink thong visible.

Bieber, who is married to Justin Bieber, also reposted footage from Carlson's sister, Sydney Lee Carlson, showing her wearing a pink feather boa and mixing a cocktail. Sydney Lee Carlson captioned the clip, "The @haileybieber special."

Kylie Jenner, whose birthday is August 10, hosted the early celebration in Beverly Hills. She shared her own glimpses of the festivities on her Instagram Stories, including photos of herself in a hot pink minidress and matching feathered heels, as well as a cake shaped like a female torso in a pink bikini. Her sisters Kim and Khloe Kardashian were also reportedly in attendance.

Hailey Bieber has also been active on her own Instagram, recently sharing a carousel of photos from August. These included images of her in a bright yellow bikini and enjoying time outdoors, along with a video of her workout routine. She captioned the post, "August so far."