Celebrity Parents Drew Barrymore Celebrates Mother's Day with Sweet Tribute to Daughters Frankie and Olive Drew Barrymore — who shares daughters Frankie, 7, and Olive, 8½, with Will Kopelman — also showed some love for her ex's mother and sister for the holiday By Georgia Slater Georgia Slater Twitter Georgia Slater is a writer/reporter on the Parents team at PEOPLE. She began at the brand in 2018 as an editorial intern and later returned as an intern on the Food team. Upon graduating from the University of Maryland in 2019, Georgia worked as an entertainment intern at USA Today before coming back to PEOPLE as a digital news writer. In April 2021, she began her role as a Parents writer/reporter. People Editorial Guidelines and Jen Juneau Jen Juneau Twitter Jen Juneau is a digital news writer for PEOPLE. A '90s teen and horror film connoisseur, she started at the brand in 2016, after a decade of working as a technical writer and then moonlighting as a journalist beginning in 2013. Originally from New Orleans, Jen grew up both in NOLA and Florida and eventually attended the University of Central Florida in Orlando (still her home base!), where she earned a bachelor's in English/technical communication, with a minor in magazine journalism. People Editorial Guidelines Published on May 10, 2021 08:20 AM Share Tweet Pin Email Will Kopelman and Drew Barrymore with their daughters. Photo: Drew Barrymore/Instagram Drew Barrymore is reflecting on her time as a mom this Mother's Day. On Sunday, the 50 First Dates star, 46, shared a meaningful post on Instagram to commemorate the special day. Barrymore — who shares daughters Frankie, 7, and Olive, 8½, with ex Will Kopelman —posted a pair of photos of her with her girls in Domino Kids magazine, writing in the caption that being a mom is "the most important thing I have ever done or will ever have the privilege of doing with my life." "My Olive and my Frankie. I love you bigger than the universe," she added. Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories. Drew Barrymore with Will Kopelman's sister Jill and mother Coco. Drew Barrymore/Instagram Drew Barrymore Says She "Felt Alone" After Becoming a Mother: "I Was Just Terrified" In a separate post, the actress also shouted out her own mother, Jaid, in a throwback photo of the two when Barrymore was a child. The actress then showed some love for Kopelman's mother, Coco, and sister, Jill Kargman, sharing a 2016 photo of the three of them. "To all the moms in my life. Happy Mother's Day!!!!!" she wrote in the caption of her post, on which Jill commented, "Love you 💋🖤." Though Barrymore loves being a mother, she recently revealed that her journey to motherhood was nothing like she expected. During her "Dear Drew" segment on Entertainment Tonight Thursday, the star said she thought motherhood would be "a little more romantic and cozy, and instead I was just terrified." "I was so under slept, I couldn't eat, I was nervous all the time. So, I wasn't really prepared for that," she explained. Drew Barrymore. Michael Loccisano/Getty RELATED VIDEO: Drew Barrymore on Single Parenting: "I'm Like a Weird, Cool Dad" "I felt alone on that, so if there's other moms out there that felt like that in the beginning, you are not alone, I felt like that too," she continued. "For any mom who felt casual and capable, you are a superhero! I wish I could have been like you." Ahead of Mother's Day, the Golden Globe winner revealed that she had gotten a meaningful family tattoo: the phrase "home is where we are," featuring a bird design. On Thursday's episode of The Drew Barrymore Show, the daytime talk show host shared that the inking was inspired by her daughters. "Wherever life takes you, if you're lucky enough to be alongside people you love, then to me, that became the definition of home," she said, noting that it was her most important lessons learned. "I never knew what home was until I had my daughters."