Finneas shared his thoughts on his sister Billie Eilish's new romance with Jesse Rutherford

Billie Eilish's big brother Finneas just wants his baby sister to be Happier Than Ever. Just weeks after the Bad Guy singer made her romance with musician Jesse Rutherford red carpet official, her older brother is expressing his support.

"Listen, as long as she's happy," he told reporters at a GQ event for its Men of the Year issue on Nov. 17, "I'm happy."

The Love Is Pain singer's comments come two weeks after Billie and The Neighbourhood singer made their red carpet debut at the 11th Annual LACMA Art + Film Gala at Los Angeles County Museum of Art on Nov. 5 wearing matching designer pajamas. 

For the event, the Happier Than Ever singer wore a crop top and a long skirt with a lace-trimmed slit. She paired the attire with a floor-length robe, platform slides, sheer gloves, and an eye mask on top of her head, which were all monogrammed in the Gucci logo.

Jesse perfectly complemented her look by wearing a silky loungewear set, including matching button-up shirt and trousers, completing the look with a pair of Gucci slippers.