turned 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
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.
Reese Witherspoon turned 50 on Sunday and received a birthday shoutout from her son Deacon Philippe; L-R Ava Phillippe, Tennessee Toth, Witherspoon and Deacon
Deacon, 22, gave his 474,000 Instagram followers a glimpse at his mother's western themed party
The proud son wrote in a caption, 'Happy birthday 2 my mom, who happens to be the goat'
Ryan Phillippe, who split from Witherspoon in 2008 after nine years of marriage, joined in the comments to drop a blushing smiley face emoji
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.
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
