Reese Witherspoon is celebrating her youngest son’s birthday! On Friday (Sept. 27), the 48-year-old Oscar-winning actress took to Instagram to share a rare photo of her son Tennessee in honor of his 12th birthday. “Happy 12th Birthday to my wonderful son, Tenn! 💙” Reese wrote.

“I’m so lucky to have your joyful, curious, hilarious spirit in my life making me laugh everyday. I love you, buddy 🥰” Keep reading to find out more..

. If you didn’t know, Reese shares Tennessee with ex-husband Jim Toth . She’s also mom to daughter Ava , 25, and son Deacon , 20, whom she shares with ex-husband Ryan Phillippe .

Earlier this month, sources revealed that Reese is in a new relationship . If you missed it, Reese recently shared an exciting update on the Legally Blonde prequel series that Prime Video has in the works! A post shared by Reese Witherspoon (@reesewitherspoon).