Billie Eilish and Nat Wolff are birds of a feather.

The couple made their red carpet debut on Wednesday at the premiere of the singer’s concert film “Billie Eilish – Hit Me Hard and Soft: The Tour (Live in 3D).”

Eilish, 24, opted for a bright green Ralph Lauren polo layered over a long-sleeve, white button-down.

She paired the look with a black skirt, blue stocking, red socks and white heels.

For the occasion, Wolff, 31, donned a brown suit and black dress shoes.

While posing for pictures, the “Naked Brothers Band” alum wrapped his arm around the “Ocean Eyes” crooner as he leaned his head on hers.

A second shot showed Eilish and Wolff smiling and looking off camera as they embraced one another.

The lovebirds also posed for pictures alongside Eilish’s parents, Maggie Baird and Patrick O’Connell, and brother Finneas O’Connell and his girlfriend, Claudia Sulewski.

Nat and his brother, Alex Wolff, were openers for Eilish on the US leg of her “Hit Me Hard and Soft” tour.

The duo, meanwhile, confirmed their romance when they were pictured kissing in Italy last June.

The “Paper Towns” actor and the Grammy winner were making out and sipping Champagne as they relaxed on a balcony in Venice.

Nat and Eilish had first sparked dating rumors after being spotted exiting the iHeartRadio Music Awards 2025 together in March 2025.

That same month, sources told Page Six that the celebrities were “very affectionate” while bar hopping in the Big Apple.

In February, she publicly supported Nat and Alex’s self-titled album on her Instagram Stories by re-sharing their post.

Nat and Eilish also turned the 2026 Grammys into a date night.

The musicians were photographed cozied up together at their table during the coveted award show.

While speaking to Vogue in 2024, Nat praised his other half, calling Eilish “one of those people where almost everything she does, she does better than everyone else.”

“She’s like, ‘Come see me ride my horse,’ and the teacher says, ‘You know, if she put all her energy into it, she could go to the Olympics,'” he gushed at the time. “You just have to kind of submit to the fact that she’s going to be better than everyone else at everything.”

Eilish previously dated The Neighborhood’s Jesse Rutherford before calling it quits in 2023 after less than a year.

The “Lovely” artist has also been linked to actor Matthew Tyler Vorce and rapper Brandon Adams.

For his part, Nat was tied to Grace Van Patten for several years before splitting in 2021.

The “Hit Me Hard and Soft: The Tour” concert movie debuts in theaters on Friday.