
Billie Eilish just celebrated her 21st birthday with a star-studded party, where she and her boyfriend Jesse Rutherford wore matching Christmas-themed outfits.
Eilish, who was born on 18 December, took to her Instagram Story on Sunday to share videos and photos from the event. In one of the clips, which was originally posted by Avril Lavigne, Eilish appeared to be wearing a Mrs Claus themed costume in honour of the holiday season.