OutKast reunites at Big Boi's son's graduation

Big Boi and Andre 3000 of Outkast perform at Wireless Festival in London in 2014.

(CNN)Rappers Big Boi and Andre 3000, who formed the superstar hip-hop duo OutKast in high school, reunited at high school once again Saturday to celebrate a graduation.

Proud dad Anton Patton, known by his stage name Big Boi, congratulated his son Cross and shared on social media memorable moments from the big day.
"Congrats Son ! Cross " The Boss " Patton ! Oregon here we come !" the rapper wrote on Instagram.