Sydney Sweeney.Photo:Todd Owyoung/NBC via Getty; Sydney Sweeney/ Instagram

Sydney Sweeney, Christmas Traditions

Todd Owyoung/NBC via Getty; Sydney Sweeney/ Instagram

Mariah Careymay be the unofficial Queen of Christmas, butSydney Sweeneysure knows how to celebrate, too.

“I love the holidays,” Sweeney, 26, tells PEOPLE.

“I get matching onesies for every single one of my family members, pets included,” says Sweeney, whose parents are now divorced. “We just have a giant room of 60 cousins, aunts and uncles, all in matching onesies.”

With everyone in their outfits, the Sweeneys strike a pose. “Then we do a pyramid where we all try and stack ourselves on top of each other and take a yearly photo,” she says.

Afterwards, they exchange presents. “We do Secret Santa,” Sweeney continues. “I love just giving gifts and seeing how happy people get.”

Sweeney is looking forward to celebrating with her family after what she calls a “whirlwind” time in her life.

The actress, who is engaged to producerJonathan Davino, filmed and released the romantic comedyAnyone But You, costarringGlen Powell. In addition to starring in the movie, Sweeney also served as an executive producer.

Glen Powell and Sydney Sweeney inAnyone But You.Brook Rushton/Sony Pictures

Glen Powell and Sydney Sweeney star in ANYONE BUT YOU

Brook Rushton/Sony Pictures

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Sweeney, who’s been filming theRon HowardmovieEden, costarringAna de ArmasandJude Law, in Australia, has a busy year ahead, too.

In addition to releasing other projects, she’ll film Season 3 ofEuphoria, reprising her Emmy-nominated role as Cassie Howard, a troubled teen who began secretly dating the ex-boyfriend (Jacob Elordi) of her best friend Maddy Perez (Alexa Demie), a situation which proved to be explosive.

About the forthcoming season, Sweeney is tight-lipped. “I can’t say anything,” she teases. “I’m really excited to get back to it.”

Anyone But Youis now in theaters nationwide.

source: people.com