On Thursday, the 42-year-old actress posted an adorable snap of her youngest son, Tennessee, whom she shares with her husband, Jim Toth. Tennessee and his dad were all smiles in the photo as the 5-year-old celebrated his graduation from preschool in a shiny blue cap and gown.
"Congrats to my little guy Tennessee on graduating preschool! ?❤️#KindergartenHereWeCome," the Big Little Lies star captioned the shot.
Over the weekend, Witherspoon's eldest children, whom she shares with ex-husband Ryan Phillippe, had cause for celebration too. Ava, 18, graduated from high school, while 14-year-old Deacon finished junior high.