One Direction star Harry Styles turned up to Sheffield Hallam University yesterday to see his 22-year-old sister Gemma graduate. Harry sat beside his mother Anne Twist to see Gemma graduate with a first class honours degree in Science Education. Dressed in the official cap and gown, the 22-year-old posed alongside her brother for official photographs, which were posted on the university's official Twitter feed. The boyband member also posted a photo on his Instagram, writing: 'My sister graduated today. She's all clever and that.' Sheffield Hallam University posted photos of the famous guest at the ceremony, writing: 'A special guest attended today's graduation ceremony to see his sister collect her degree! Welcome @Harry_Styles. 'Congratulations to @GemmaAnneStyles on her degree and a warm Sheffield welcome to her brother @Harry_Styles too.' 19-year-old Harry often visited his sister Gemma while she was studying in Sheffield, attending parties at the student union and the student accommodation, The generous One Directioner also treated his sister to a holiday in the US to join One Direction on their world tour earlier this year, after she finished her exams. He tweeted at the time: 'Well done to my annoyingly clever sister @GemmaAnneStyles on completing her education! I'm so proud of you xx,'