Billie Eilish And Her Boyfriend Inseparable At Doja Cat Birthday Party

Billie Eilish had love on the brain on Wednesday night at Doja Cat’s 26th birthday party at LA hotspot Delilah.

The “Bad Guy” singer arrived at the undersea-themed bash with her boyfriend, self-described “actor, writer, degenerate” Matthew Tyler Vorce — and they were reportedly “inseparable.”

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Eilish dressed up as a lobster for Halloween, and she and Vorce “were inseparable, sharing kisses,” according to a spy.

“They kept close to each other the whole night and never left each other’s side,” they said.

Billie Eilish, 19, and Vorce began dating earlier this year but were not publicly seen together until April, when the media published exclusive photos of the couple out and about in Santa Barbara, California.

Aside from Billie Eilish and her 29-year-old boyfriend, guests included French Montana, Bella Hadid, Tyga, Winnie Harlow, Karreuche Tran, Malia and Sasha Obama, and Teyana Taylor.

“Everyone was coming up to her and hugging her and saying ‘Happy Birthday,'” said the source. Justin and Hailey Bieber, a celebrity couple, were also present.

According to a recent report, Doja Cat channelled Princess Kida from “Atlantis: The Lost Empire” in a sexy pale blue bandeau and loincloth-like skirt, as well as a white wig.

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“Doja Cat was in high spirits as she celebrated with her friends and family.” “The DJ played a couple of her songs, and everyone was dancing and singing along,” according to the source.

According to reports, the singer and her friends, including Eilish, had a sing-off around her “big blue birthday cake of Ariel, the mermaid under the water.”