It's prom night for Deacon Phillippe.
"Prom anyone??," he captioned the snaps, which included some him posing outside on a putting green in a sleek dark grey jacket and matching trousers, light-blue button-up, skinny tie and pink flower corsage.
He also shared a pic alongside his dad and two friends.
Reese took to the comments section to gush over the teen's prom look, saying she loved his pink flower by way of emojis. Deacon's older sister Ava Phillippe, 22, also commented, "looking sharp!"
Later on his Instagram Story, Deacon posted a video of him trying to sink a putt before heading to prom, writing, "Prom shot was wildly unsuccessful."
Deacon's big night comes seven months after Reese and Ryan—who finalized their divorce in 2008 after nine years of marriage—reunited at a restaurant to celebrate their youngest child's 18th birthday.
"Happy 18th birthday to our gorgeous, smart, talented, and caring son," the 47-year-old actor wrote on Instagram Oct. 23, alongside a few photos from the celebration. "You are a true light in this world and are so loved by all who know you. We are lucky to be your mom and dad. Love you, pup.."
Ryan added, in parentheses, "I'd say we did pretty good @reesewitherspoon."
Reese, 46, shared another pic of herself with Ryan and Deacon at the event on her Instagram Story, writing, "We love you Deacon! You make us so proud!"
Keep scrolling to see more celeb kids as they go off to prom.