(CNN)We know him as Sly, but to Sophia Stallone, he's dad.
Sylvester Stallone watched his daughter graduate from the University of Southern California on Friday. The actor, writer and director took to Instagram to share the happy news.
"Our daughter SOPHIA graduates from USC!!!! An absolutely amazing day for us all. So proud!!!!" he captioned a photo of him standing beside his daughter in cap and gown.