Reese Witherspoon's Daughter Ava Announces Major Family Update

Ava Phillippe has added a new member to her family.

The firstborn daughter of Reese Witherspoon and Ryan Phillippe took to social media this week to share an exciting family update—and it involves a furry new friend.

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Phillippe, 25, uploaded photos and videos to officially introduce the world to her dog, Birdie.

"This is Birdie! 🐥 She has blue eyes (for now?), a fantastic underbite, and the spunkiest personality," Phillippe wrote in her Instagram caption on Wednesday, Nov. 13, while sharing an adorable selfie of her holding the new four-legged family member in her arms.

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Birdie joins Phillippe's other dog, Benji, which she often shows off on social media. In a video from her post on Wednesday, Benji could be seen already getting acquainted with his new little sister, as the two dogs engaged in a spirited game of tug.

Phillippe adopted Birdie from the rescue organization Wags and Walks, which she thanked in her post for helping Birdie as she "finally made her way home."

"We know she's about 3 months old, but what breed(s) do you think this gal might be?" Phillippe asked, challenging fans to leave their guesses in the comments as she waited for the DNA test results.

"What a cutie!! Birdie just one [sic] the family jackpot! ❤️," one fan wrote in the comments, while someone else joked that Birdie could be a "Witherphildoodle."

Phillippe is Witherspoon's only daughter. The Legally Blonde actress, 48, also shares a son, Deacon Phillippe, 21, with Ryan, and a younger son, Tennessee, 12, whom she shares with her ex, Jim Toth.

Next: Reese Witherspoon Looks Unrecognizable in Childhood Photo With Older Brother John