LONDON, UNITED KINGDOM - DECEMBER 11: Exhibits are displayed during a press call at the 'Elvis at the O2, The Exhibition of His Life' on December 11, 2014 in London, England. The exhibition is the largest ever retrospective ever to take place in Europe, and features over 300 artefacts from the Presley family's Graceland Archives. The show runs at the O2 Arena from 12 December to 31 August, 2015. Tolga Akmen / Anadolu Agency

LONDON, UNITED KINGDOM - DECEMBER 11: Exhibits are displayed during a press call at the 'Elvis at the O2, The Exhibition of His Life' on December 11, 2014 in London, England. The exhibition is the largest ever retrospective ever to take place in Europe, and features over 300 artefacts from the Presley family's Graceland Archives. The show runs at the O2 Arena from 12 December to 31 August, 2015. Tolga Akmen / Anadolu Agency

LONDON, UNITED KINGDOM - DECEMBER 11: A pair of boxing gloves presented to Elvis Presleys by Muhammad Ali in 1963 are displayed during a press call at the 'Elvis at the O2, The Exhibition of His Life' on December 11, 2014 in London, England. The exhibition is the largest ever retrospective ever to take place in Europe, and features over 300 artefacts from the Presley family's Graceland Archives. The show runs at the O2 Arena from 12 December to 31 August, 2015. Tolga Akmen / Anadolu Agency

LONDON, UNITED KINGDOM - DECEMBER 11: A Jump Suit which was worn by Elvis Presley is displayed during a press call at the 'Elvis at the O2, The Exhibition of His Life' on December 11, 2014 in London, England. The exhibition is the largest ever retrospective ever to take place in Europe, and features over 300 artefacts from the Presley family's Graceland Archives. The show runs at the O2 Arena from 12 December to 31 August, 2015. Tolga Akmen / Anadolu Agency

LONDON, UNITED KINGDOM - DECEMBER 11: A Lincoln Continental which owned by Elvis Presley is displayed during a press call at the 'Elvis at the O2, The Exhibition of His Life' on December 11, 2014 in London, England. The exhibition is the largest ever retrospective ever to take place in Europe, and features over 300 artefacts from the Presley family's Graceland Archives. The show runs at the O2 Arena from 12 December to 31 August, 2015. Tolga Akmen / Anadolu Agency

LONDON, UNITED KINGDOM - DECEMBER 11: Exhibits are displayed during a press call at the 'Elvis at the O2, The Exhibition of His Life' on December 11, 2014 in London, England. The exhibition is the largest ever retrospective ever to take place in Europe, and features over 300 artefacts from the Presley family's Graceland Archives. The show runs at the O2 Arena from 12 December to 31 August, 2015. Tolga Akmen / Anadolu Agency

LONDON, UNITED KINGDOM - DECEMBER 11: Elvis Presley's wallet is displayed during a press call at the 'Elvis at the O2, The Exhibition of His Life' on December 11, 2014 in London, England. The exhibition is the largest ever retrospective ever to take place in Europe, and features over 300 artefacts from the Presley family's Graceland Archives. The show runs at the O2 Arena from 12 December to 31 August, 2015. Tolga Akmen / Anadolu Agency

LONDON, UNITED KINGDOM - DECEMBER 11: A Lincoln Continental which owned by Elvis Presley is displayed during a press call at the 'Elvis at the O2, The Exhibition of His Life' on December 11, 2014 in London, England. The exhibition is the largest ever retrospective ever to take place in Europe, and features over 300 artefacts from the Presley family's Graceland Archives. The show runs at the O2 Arena from 12 December to 31 August, 2015. Tolga Akmen / Anadolu Agency

LONDON, UNITED KINGDOM - DECEMBER 11: A pair of sun glasses that belonged to Elvis Presley are displayed during a press call at the 'Elvis at the O2, The Exhibition of His Life' on December 11, 2014 in London, England. The exhibition is the largest ever retrospective ever to take place in Europe, and features over 300 artefacts from the Presley family's Graceland Archives. The show runs at the O2 Arena from 12 December to 31 August, 2015. Tolga Akmen / Anadolu Agency

LONDON, UNITED KINGDOM - DECEMBER 11: Elvis Presley's wallet is displayed during a press call at the 'Elvis at the O2, The Exhibition of His Life' on December 11, 2014 in London, England. The exhibition is the largest ever retrospective ever to take place in Europe, and features over 300 artefacts from the Presley family's Graceland Archives. The show runs at the O2 Arena from 12 December to 31 August, 2015. Tolga Akmen / Anadolu Agency

LONDON, UNITED KINGDOM - DECEMBER 11: Elvis Presleys' Harley Davidson 1976 Electroglide is displayed during a press call at the 'Elvis at the O2, The Exhibition of His Life' on December 11, 2014 in London, England. The exhibition is the largest ever retrospective ever to take place in Europe, and features over 300 artefacts from the Presley family's Graceland Archives. The show runs at the O2 Arena from 12 December to 31 August, 2015. Tolga Akmen / Anadolu Agency

LONDON, UNITED KINGDOM - DECEMBER 11: Jump Suits which were worn by Elvis Presley are displayed during a press call at the 'Elvis at the O2, The Exhibition of His Life' on December 11, 2014 in London, England. The exhibition is the largest ever retrospective ever to take place in Europe, and features over 300 artefacts from the Presley family's Graceland Archives. The show runs at the O2 Arena from 12 December to 31 August, 2015. Tolga Akmen / Anadolu Agency

LONDON, UNITED KINGDOM - DECEMBER 11: A Gibson J200 from the 1968 TV special is displayed during a press call at the 'Elvis at the O2, The Exhibition of His Life' on December 11, 2014 in London, England. The exhibition is the largest ever retrospective ever to take place in Europe, and features over 300 artefacts from the Presley family's Graceland Archives. The show runs at the O2 Arena from 12 December to 31 August, 2015. Tolga Akmen / Anadolu Agency

LONDON, UNITED KINGDOM - DECEMBER 11: An US Army uniform that belonged to Elvis Presley is displayed during a press call at the 'Elvis at the O2, The Exhibition of His Life' on December 11, 2014 in London, England. The exhibition is the largest ever retrospective ever to take place in Europe, and features over 300 artefacts from the Presley family's Graceland Archives. The show runs at the O2 Arena from 12 December to 31 August, 2015. Tolga Akmen / Anadolu Agency

LONDON, UNITED KINGDOM - DECEMBER 11: A pool table used by Elvis Presley and Ringo Starr is displayed during a press call at the 'Elvis at the O2, The Exhibition of His Life' on December 11, 2014 in London, England. The exhibition is the largest ever retrospective ever to take place in Europe, and features over 300 artefacts from the Presley family's Graceland Archives. The show runs at the O2 Arena from 12 December to 31 August, 2015. Tolga Akmen / Anadolu Agency

LONDON, UNITED KINGDOM - DECEMBER 11: An MG sports car, driven and owned by Elvis Presley is displayed during a press call at the 'Elvis at the O2, The Exhibition of His Life' on December 11, 2014 in London, England. The exhibition is the largest ever retrospective ever to take place in Europe, and features over 300 artefacts from the Presley family's Graceland Archives. The show runs at the O2 Arena from 12 December to 31 August, 2015. Tolga Akmen / Anadolu Agency

LONDON, UNITED KINGDOM - DECEMBER 11: Exhibits are displayed during a press call at the 'Elvis at the O2, The Exhibition of His Life' on December 11, 2014 in London, England. The exhibition is the largest ever retrospective ever to take place in Europe, and features over 300 artefacts from the Presley family's Graceland Archives. The show runs at the O2 Arena from 12 December to 31 August, 2015. Tolga Akmen / Anadolu Agency

LONDON, UNITED KINGDOM - DECEMBER 11: Jump Suits which were worn by Elvis Presley are displayed during a press call at the 'Elvis at the O2, The Exhibition of His Life' on December 11, 2014 in London, England. The exhibition is the largest ever retrospective ever to take place in Europe, and features over 300 artefacts from the Presley family's Graceland Archives. The show runs at the O2 Arena from 12 December to 31 August, 2015. Tolga Akmen / Anadolu Agency

LONDON, UNITED KINGDOM - DECEMBER 11: Annotated musical sheets to 'Love Me Tender' and Elvis Presley's personal microphone are displayed during a press call at the 'Elvis at the O2, The Exhibition of His Life' on December 11, 2014 in London, England. The exhibition is the largest ever retrospective ever to take place in Europe, and features over 300 artefacts from the Presley family's Graceland Archives. The show runs at the O2 Arena from 12 December to 31 August, 2015. Tolga Akmen / Anadolu Agency

LONDON, UNITED KINGDOM - DECEMBER 11: A Bureau of Narcotics and Dargerous Drugs badge which was presented to Elvis is displayed during a press call at the 'Elvis at the O2, The Exhibition of His Life' on December 11, 2014 in London, England. The exhibition is the largest ever retrospective ever to take place in Europe, and features over 300 artefacts from the Presley family's Graceland Archives. The show runs at the O2 Arena from 12 December to 31 August, 2015. Tolga Akmen / Anadolu Agency

LONDON, UNITED KINGDOM - DECEMBER 11: Elvis Presleys' Harley Davidson 1976 Electroglide is displayed during a press call at the 'Elvis at the O2, The Exhibition of His Life' on December 11, 2014 in London, England. The exhibition is the largest ever retrospective ever to take place in Europe, and features over 300 artefacts from the Presley family's Graceland Archives. The show runs at the O2 Arena from 12 December to 31 August, 2015. Tolga Akmen / Anadolu Agency

LONDON, UNITED KINGDOM - DECEMBER 11: A 'Taking Care of Business' ring designed by Elvis Presley is displayed during a press call at the 'Elvis at the O2, The Exhibition of His Life' on December 11, 2014 in London, England. The exhibition is the largest ever retrospective ever to take place in Europe, and features over 300 artefacts from the Presley family's Graceland Archives. The show runs at the O2 Arena from 12 December to 31 August, 2015. Tolga Akmen / Anadolu Agency