Ms Manning was convicted in 2013 of espionage and other offences for providing more than 700,000 documents, videos, diplomatic cables and battlefield accounts to WikiLeaks in the largest breach of classified information in US history.

She was pardoned by Mr Obama in one of his last acts as president, after a long campaign by free speech activists.

Ms Manning, once known as Private First Class Bradley Manning, has reportedly said she would like to take up a role as an advocate for the transgender community.

After her release on Wednesday, she posted a picture of her feet, captioned "First steps of freedom!!"