Proud brother Harry Styles beamed as his big sister Gemma graduated from Sheffield Hallam University in England on Wednesday (13Nov13).

The One Direction star posed for a picture with the Science Education graduate, who was dressed in her cap and gown, at the ceremony - and then posted the shot on his Instagram.com page.

He alerted fans to his big news on Twitter, announcing, "My Sister graduated today. She's all clever and that."

Pretty Gemma, 22, was presented with her first-class degree by top fertility expert Professor Robert Winston, the university's chancellor.