Hailey Bieber appeared to throw caution to the wind at Kylie Jenner’s 29th birthday party.

The model attended the party, held last Friday in Los Angeles, and appeared to take things a little too far: one photo from the event shows Bieber licking a fellow guest’s buttock.

The picture, originally posted by influencer Devon Lee Carlson and later reshared by Bieber herself, shows the model, wearing a tiara, bent over as she licks her friend’s buttock. The friend, whose face is not visible, is leaning over a marble counter with a drink in hand.

The 29-year-old also shared another snapshot from the party showing her wearing pink feathers and dancing while shaking a cocktail shaker, captioning it “@haileybieber’s signature move”.

Kylie Jenner’s party, attended by Hailey Bieber alongside her sisters and other celebrities, had a kitten theme.

Jenner herself wore a pink latex dress, pink feathered heels and a pink headband trimmed with feathers.

A group photo featuring Hailey Bieber, Kendall Jenner, Khloé Kardashian and Kim Kardashian shows all the guests dressed in pink, wearing tiaras and feather boas.