Billie Eilish, 19, and her brother Finneas‘ girlfriend, Claudia Sulewski seemed to have a great time a few weeks ago while watching Justin Bieber perform! The “Ocean Eyes” singer shared a new snapshot to her Instagram on Jan. 18 and it appeared to be from Justin’s New Year’s Eve show at Waldorf Astoria. In the cheeky pic, Billie is smiling and standing in front of what appears to be a railing as Claudia bends down and places her hand on her butt and leans in while making a kissing face.