Kendall Jenner and Hailey Bieber in photo booth at Billie Eilish's star-studded 21st Birthday

dailymail.co.uk:

Kendall Jenner and Hailey Bieber got edgy in a photo booth as they playfully posed with middle fingers up on Saturday night when the pair attended Billie Eilish's star-studded 21st birthday.

Jenner, 27, and Bieber, 26, looked like they were having an absolute blast taking the black-and-white photos, which they both posted to their Instagram Stories.

Kendall also posted some sultry sepia shots of herself on Sunday, capping off a busy weekend for the supermodel as she celebrated her nephew's epic 13th birthday on Saturday night as well.

Happy Birthday Billie! Kendall Jenner, 27, and Hailey Bieber, 26, posed up a storm together in a photo booth on Saturday night when the pair attended Billie Eilish's star-studded 21st birthday in West HollywoodLooking glamorous like always, Jenner and Bieber joined Eilish in West Hollywood for her holiday-themed birthday bash.