Reese Witherspoon is celebrating her "favorite" daughter on her special day.
On Friday, the Legally Blonde star, 46, paid tribute to daughter Ava with a sweet Instagram post in honor of her 23rd birthday. Witherspoon, who shares Ava with ex-husband Ryan Phillippe, posted a beautiful photo of the look-alike mother-daughter pair posing in front of a beach sunset.
"Happy Birthday to my favorite daughter, Ava !! 🥰Every day that I get to watch you become the most amazing woman is such a gift," Witherspoon wrote. "Your gigantic heart, generous spirit, and endless creativity inspire me every day. I love you so much 💞💫🎂."
The actress also shared an adorable throwback photo of Ava on her Instagram Story as well as a recent shot from when Witherspoon and her daughter went out for dinner and drinks together.
"Can't believe this little girl....is turning 23 today! Happy birthday to the most wonderful daughter! I love you, Ava!" wrote the Big Little Lies star.
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.
RELATED: Reese Witherspoon's 3 Kids: Everything to Know
Several of Witherspoon's famous friends sent celebratory messages to Ava in the comments of the actress's post.
"Happy birthday Ava!!! ❤️," wrote Julianne Moore, while Zooey Deschanel dropped a string of heart-eyed emojis.
"Mom daughter twins 😍❤️," added Queer Eye's Jonathan Van Ness.
Witherspoon also shares son Deacon, 18, with Phillippe, as well as son Tennessee James, 9, with her current husband Jim Toth.
Witherspoon was just 23 years old when she had Ava. The actress later spoke about being a young mom during an appearance on The Drew Barrymore Show.
"To be completely candid, I was terrified," Witherspoon told host Drew Barrymore. "I got pregnant when I was 22 years old, and I didn't know how to balance work and motherhood, you just do it … I was just like every other mom and dad trying to figure it out."
Now 23 herself, Ava looks just like her mother — so much so that both Witherspoon and Ava have joked about it in interviews.
"I'm so proud of her. She really rolls with it. I'm sure it's not easy looking exactly like your mother," Witherspoon said in an interview with InStyle.
Jacket season is upon us, and there’s one particular style that is always in season. Jean jackets are one of the most essential transitional pieces to have in your closet for next season. Reese Witherspoon even made a case for this fall staple before summer ended. The actress was spotted in a denim jacket while […]
See Reese Witherspoon's stunning throwback snap.
Dylan Dreyer shared back-to-school photos of sons Calvin and Oliver.
The Nordstrom Summer sale is officially here and the deals are insane. Snag end-of-summer savings on Zella, Levi's and Kate Spade.
They're all on sale!
The bad news for anyone whose budget is struggling to keep up with rising prices is that inflation is not yet starting to cool. While things appeared to be moving in the right direction in April, May...
Amal Clooney stole the spotlight in a bright yellow mini dress during a night out with husband George Clooney to celebrate his new movie, Ticket to Paradise.
Season 4 of ‘The Kelly Clarkson Show’ debuts Sept. 12.
The Today anchor is mom to daughters Haley, 5, and Hope, 3
Gigi Hadid is opening up about motherhood. In a preview from Sunday, Sept. 11th’s episode of Sunday Today with Willie Geist, the model — who just launched her new fashion line Guest in Residence — gave an update on life with 2-year-old daughter Khai. The star shares her only child with her former partner, One Direction alum Zayn Malik.
The streaming service is bringing back one of CBS' biggest hits
The new Fox series stars Susan Sarandon and Trace Adkins as the matriarch and patriarch of a country music dynasty.
Tom Brady’s 11-day absence from training camp following a 40-day retirement earlier this year has some people doubting the seven-time Super Bowl champion’s focus entering his 23rd season in the NFL. The 45-year-old Brady didn’t come back to be mediocre. After leading the NFL in yards passing and touchdowns last season, Brady returned to chase “unfinished business.”
Are corsets the new power blazer?
The Queen had her actual birthday on April 21, and an official birthday held on a Saturday in June — and it has to do with the weather.
Like Kate Middleton, Meghan Markle didn't join Prince Harry and the rest of the royal family in Balmoral to be with the Queen prior to her death.
The singer displayed her home's unique features, such as the interactive cloud light and spaceship-like elevator, in Architectural Digest
"What a moment this was."View Entire Post ›
The 27-year-old model is friends with DiCaprio, but he'd like to be more, a source said.
Eminem joined his manager Paul Rosenberg on his podcast “Paul Pod” to discuss how the rapper came back from an accidental overdose of methadone in 2007.