Sir Paul McCartney and Nancy Shevell attend their wedding at at Marylebone Registry Office on October 9, 2011 in London, England. (Photo by Danny Martindale/Getty Images)

Nancy Shevell leaves the Marylebone Registry Office after her civil ceremony marriage to Sir Paul McCartney on October 9, 2011 in London, England. (Photo by Danny Martindale/Getty Images)

Ringo Starr and his wife Barbara Bach leave the Marylebone Registry Office after the civil ceremony marriage of Sir Paul McCartney and Nancy Shevell on October 9, 2011 in London, England. (Photo by Danny Martindale/Getty Images)

James McCartney attends the wedding of Sir Paul McCartney and Nancy Shevell at Westminster Register office on October 9, 2011 in London, England. (Photo by Danny Martindale/Getty Images)

Barbara Walters leaves Marylebone Registry Office after their civil ceremony marriage of Sir Paul McCartney and Nancy Shevell on October 9, 2011 in London, England. (Photo by Danny Martindale/Getty Images)