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Drew Barrymore can't wait to hit 40.

The actress and mother of two will celebrate her 40th birthday Feb. 22.

"I'm so excited," Barrymore told E! News at a holiday party for fashion and entertainment website Refinery29, where Barrymore is editor-at-large.

"I finally feel the age that I am and I'll tell you why-I always felt older than the number I was," she said. "I was always too mature and adult and raising myself or running a company or I'm only 19 and I'm a homeowner. Forty feels like where I'm at. It makes sense."

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Barrymore is also enjoying married life with husband Will Kopelman and being a mom to their daughters, Olive, 2, and 8-month-old Frankie.

"I'm very happy," Drew beamed. "Marriage is great and the kids are the best. I know that everyone says you're supposed to treat your spouse as equal as your kids, but I struggle every day of who I love the most. I love them all!"