Reese Witherspoon celebrated on social media as her 12-year-old son Deacon graduated from elementary school. "Off to Jr High! Yay, Deacon! #proudmom" she captioned a shot of the dapper pair on Instagram, dressed up for the day's festivities on Friday (10Jun16). Deacon is Reese's second child with ex-husband Ryan Phillippe, and the former couple also have 16-year-old daughter Ava. The actress also has another son, three-year-old Tennessee, with second husband Jim Toth.