Billie Eilish Celebrates Her 21st Birthday

With a Christmas-themed bash.

Billie Eilish Celebrates Her 21st Birthday

With a Christmas-themed bash.

Billie Eilish turned 21 this past weekend and celebrated her birthday with an all-star Christmas-themed party. Wearing a sexy ensemble Mrs. Claus would approve of, the Grammy award-winning singer donned a fitted bright red dress with a snow white fur trim. She completed her festive look with a matching cape and gloves.

Her new beau Jesse Rutherford was naturally wearing a coordinating outfit and standing by her side all night. Other attendees included Dove Cameron, Avril Lavigne and Lil Nas X who almost stole Eilish’s birthday thunder as he put his washboard abs on full display, wearing a crimson long-sleeved shirt with an open torso.

Eilish and Rutherford’s relationship has been a popular, if not controversial, topic of conversation, largely because of their ten year age gap. They seem to be ignoring naysayers as the couple dressed up as an old man and a baby for Halloween, turning the tables on critics who say Eilish is potentially being groomed. In an attempt to dispel rumors, Eilish bragged about pinning her older man down and demanded fans clap for her in her annual Vanity Fair interview.

The Neighborhood frontman surprised his girlfriend with a cake on stage after she sold out an Inglewood show this past Saturday.

Take a peek inside Eilish’s 21st birthday party below.