Reese Witherspoon turned 50 on Sunday and received a birthday shoutout from her son Deacon Philippe.
Deacon, 22, gave his nearly 500,000 Instagram followers a glimpse at his mother's western themed party and wrote in a caption, 'Happy birthday 2 my mom, who happens to be the goat.'
The actress shares Deacon as well as daughter Ava Phillippe, 26, with ex-husband Ryan Phillippe, 51.
Phillippe, who split from Witherspoon in 2008 after nine years of marriage, joined in the comments to drop a blushing smiley face emoji.
The Legally Blonde star also shares 13-year-old son Tennessee Toth with ex-husband Jim Toth.
She appeared alongside all three of her kids in a video snippet shared in Deacon's carousel post.
The silver screen siren donned a sparkly, fringed, white mini dress for her birthday bash and her sons adhered to the theme with cowboy hats.
Deacon wore a wide-brimmed black hat, coordinating with his dark-colored cable knit sweater.
He added a pair of khaki trousers and one photo showed the New York University student, who studies music, DJing the party.
Ava also acknowledged their mom's birthday, sharing a precious cheek-to-cheek photo from the soiree via Instagram Stories.
Witherspoon's mini-me daughter was clad in a fitted, black, lace dress with a belt cinching her waist.
She wrote, 'Happy 50th, Mama! We are so blessed to love & be loved by you & to feel the warmth of your sunshine in our lives.'
Another black and white image showed Witherspoon holding an espresso martini as wind blew through her hair.
Ava wrote over the picture, 'It's this beauty's birthday!'
Deacon also shared a photo of him mother enjoying a cocktail on a different occasion
One photo showed the New York University student DJing the party
Ava also acknowledged her mom's birthday on her Instagram account, sharing a precious cheek-to-cheek photo
A black and white image showed Witherspoon holding an espresso martini as wind blew through her hair
In October Witherspoon took to Instagram to wish Deacon a happy birthday.
'Happy 22 to my wonderful son @deaconphillippe,' she wrote in a caption, which accompanied four photos.
One image showed him behind DJ decks and the following three were rare snapshots of the Little Fires Everywhere star and her son together.
She continued in the birthday note, 'I love you so much, buddy,' as her son replied in the comments: 'Love u mama ❤️.'
Meanwhile, ex-husband Phillippe wrote, 'We did good,' adding a prayer hands emoji.
Deacon appeared onscreen alongside his dad in the 2025 Prime Video series Motorheads.
For her part, Ava studied social welfare at UC Berkley before graduating in 2022 and becoming a model.
'My parents have always encouraged me to choose the path that's right for me and, you know, guide me along the way to make better choices than I might make,' the nepo baby told Daily Pop in 2021.