Former US president Bill Clinton says he “couldn’t be prouder” of his daughter after attending her doctorate graduation ceremony at Oxford University.

Chelsea Clinton, who is pregnant with her first child, was accompanied at the Saturday ceremony by her father and mother, Hillary, as well as her husband Marc Mezvinsky.

The 34-year-old, who works as a journalist, was presented with her doctorate degree in international relations at the Sheldonian Theatre in Oxford.

Her father posted on Twitter: “Couldn’t be prouder of @ChelseaClinton today. Congrats on your doctorate.”

He also posted a photograph of the four of them together, including his daughter in her graduation robes and holding her degree.

Ms Clinton previously completed an MPhil in the same subject at Oxford in 2003 having completed a BA in history at Stanford in the US.

Her father, who gained a Rhodes scholarship, also studied at Oxford from 1968 to 1970.