Sydney Sweeney Teases ‘Bittersweet’ Third Season of ‘Euphoria’ & Sings ABBA With ‘Icon’ Amanda Seyfried

After starring in The Housemaid and wrapping the third season of Euphoria this year, Sydney Sweeney probably wouldn’t mind if her next role involved Greek islands, a confusing paternity situation and a whole lot of ABBA music.

While guesting on The Tonight Show on Monday night (Dec. 1), the actress raved about her love for Mamma Mia — a passion that naturally came up a lot while she was filming The Housemaid with Amanda Seyfried, who starred in both of the musical franchise’s films. “I am like the biggest Mamma Mia fan,” Sweeney gushed.

Sharing that she frequently listens to the ABBA-filled Mamma Mia soundtrack, Sweeney revealed that she once sent a video of her friends belting along to the songs on the beach to Seyfried. “I was like, ‘You’re forever my icon.’ I love her.”

Of course, Sweeney had to pounce on the opportunity to sing one of the movie musical’s tracks with Seyfried when they were on set of The Housemaid, which hits theaters Dec. 19. Showing the audience a TikTok of herself singing along to “Angeleyes” with Seyfried, Sweeney said, “All my dreams came true, it was amazing.”

The first Mamma Mia film — which also starred Meryl Streep, Pierce Brosnan and a long list of other A-listers — premiered in 2008. It was adapted from the jukebox stage musical of the same name featuring a soundtrack entirely comprised of ABBA hits.

Ten years later, the cast reunited for Mamma Mia! Here We Go Again. If the pattern continues, a third Mamma Mia would theoretically arrive in 2028 — and Seyfried has already said that she’d be game. She also said that she’d love to have Sweeney join the franchise, along with Sabrina Carpenter.

“I love portraying a mom, so I would love to see [my character] Sophie with her kids,” Seyfried told Entertainment Tonight in November. “Maybe she has a cousin she hasn’t seen in a while, and that could be Sabrina Carpenter. And then Sydney Sweeney could show up. There’s a bunch of girls I really want to be a part of it, and I’m all for it.”

In the meantime, Sweeney is looking forward to the third season of Euphoria finally coming to HBO Max in 2026. While speaking to host Jimmy Fallon, the Hollywood starlet teased that the Sam Levinson series might continue after season three — “You never know,” she said with a shrug — and added that wrapping the third installment in November was “bittersweet.”

Sweeney also described the upcoming season of Euphoria in one word, following Jacob Elordi’s lead. (When the Australian actor appeared on Fallon in October, he summed up the next batch of episodes with: “white fritillaries.”)

The Anyone But You leading lady’s word choice? “Self-discovery,” she hinted.

Watch Sweeney on The Tonight Show above.