The exhibition documents her fascinating life in photographs, illustrating her days as a chorus girl in the West End, a glamorous film career, through to her philanthropic work in later life.
More than 70 images feature in the exhibition, with many portraits by leading 20th century photographers such as Richard Avedon, Cecil Beaton, Terry O'Neill, Norman Parkinson and Irving Penn.
The collection also includes lesser known portraits of Hepburn (1929 - 1993) as well as vintage magazine covers and film stills.
The portraits are on display until mid-October and we've also included Hepburn as one of our golden age style icons for September's Scarf of the Month. Check out her scarf style here along with our other favourite stars.
The exhibition is on from 2 July - 18 October 2015
Full price tickets: £10 / Concession £8.50
Ticket without donation: £9 / Concession £7.50
Open daily: 10am - 6pm and til 9pm on a Thursday and Friday
The National Portrait Gallery
St Martin's Place