Tis the season for bringing families together.

Drew Barrymore celebrated the holidays with her ex Will Kopelman and her two daughters Olive, 4, and Frankie, 2.

“We usually go to Idaho but didn’t this year because Will’s family was traveling,” she tells PEOPLE in this week’s issue. “But all spent Halloween and Thanksgiving together!”

Despite ending their nearly four-year marriage in August, Barrymore, 41, says she still has a close relationship with Kopelman’s side of the family.

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“It’s everything and always will be,” she says. “We are a family. Family has a wild definition nowadays. I think we just fit right in!”

And while she loves that her daughters have such a close bond with their father, she still values her one-on-one time with them.

“Not a moment of it slips by where I don’t realize how special it is,” she says. “Sometimes I just look at them and marvel, like, ‘I can’t believe I’m getting to have breakfast with my daughters.’ “