The shoes of Britain\'s Home Secretary Theresa May are seen as she speaks during the Police Superintendents Association of England and Wales annual conference in Kenilworth, Britain, September 9, 2015. REUTERS/Darren Staples

The shoes Britain\'s Home Secretary Theresa May are seen as she speaks at a news conference in London March 23, 2015. Britain will introduce a raft of measures to counter Islamist extremism including a crackdown on Sharia law and incendiary preachers if David Cameron\'s Conservatives win May\'s election, Home Secretary May said on Monday. REUTERS/Suzanne Plunkett

Britain\'s Home Secretary Theresa May\'s shoes are pictured as she speaks during her Conservative party leadership campaign at the Institute of Engineering and Technology in Birmingham, England, Britain July 11, 2016. REUTERS/Andrew Yates

The shoes of Britain\'s Home Secretary Theresa May are seen as she listens to Prime Minister David Cameron deliver his keynote address at the annual Conservative Party Conference in Manchester, Britain October 7, 2015. REUTERS/Suzanne Plunkett

The shoes of Britain\'s Home Secretary Theresa May are seen as she listens to U.S. Attorney General Loretta Lynch speak at a \'Countering Terrorism: A Global Perspective\' event at Chatham House in London, Britain December 9, 2015. Lynch said on Wednesday she was disappointed by a European Union court decision to strike down a data transfer deal and said legislation in the European Parliament might further restrict information sharing. REUTERS/Toby Melville

Britain\'s Home Secretary Theresa May delivers her keynote address on the second day of the Conservative party annual conference in Manchester, northern England September 30, 2013. REUTERS/Phil Noble (BRITAIN - Tags: POLITICS SOCIETY)

The shoes Britain\'s Home Secretary Theresa May are seen as she speaks at the Conservative Party\'s annual Spring Forum, in central London March 16, 2013. REUTERS/Suzanne Plunkett (BRITAIN - Tags: POLITICS)

Britain\'s Home Secretary Theresa May delivers her address on the third day of the Conservative Party Conference in Manchester, northern England October 4, 2011. REUTERS/Phil Noble (BRITAIN - Tags: POLITICS)

Britain\'s Shadow Minister for Women, Theresa May, walks across the stage to speak at the Conservative Party annual conference at the International Convention Centre in Birmingham, central England September 30, 2008. REUTERS/Stephen Hird (BRITAIN)

The shoes of Britain\'s opposition Conservative Party Shadow Work and Pensions Secretary Theresa May are pictured during her address to the Conservative Party conference in Manchester, northern England, October 7, 2009. Britain\'s opposition Conservatives said on Wednesday they would sharply raise taxes on alcopops and super-strength lager and cider, if elected, in a drive against binge drinking and anti-social behaviour. REUTERS/Phil Noble (BRITAIN POLITICS)

The shoes of Britain\'s Conservative party Secretary of State for the Family Theresa May are seen at a news conference in central London. The shoes of Britain\'s Conservative party Secretary of State for the Family Theresa May are seen as she (L) and Shadow Home Secretary David Davis (R) address a news conference on crime, in central London, April 22, 2005. REUTERS/Toby Melville

Conservative Shadow Secretary of State for Families May delivers her speech at the party\'s annual conference in Bournemouth. The shoes of Britain\'s opposition Conservative Party\'s Shadow Secretary of State for Families, Theresa May are seen as she delivers her speech at the party\'s annual conference in Bournemouth, October 5, 2004. REUTERS/Toby Melville

The shoes of Britain\'s opposition Conservative Party\'s Shadow Secretary of State for Environment and Transport, Theresa May, are seen as she speaks during a debate at the Conservative Spring Forum in Harrogate, northern England, March 6, 2004. REUTERS/Simon Bellis MD/ACM

The shoes of Conservative Party Chairman Theresa May are seen on stage\nduring the unveiling of the conference set in the Winter Gardens in\nBlackpool ahead of her party\'s annual conference in Blackpool, northern\nEngland, October 5, 2003. The conference begins on Monday. REUTERS/Paul\nMcErlane\n\nPM/MD

The shoes of Britain\'s Theresa May as she speaks outside the Houses of Parliament in London, Monday July 11, 2016. Britain\'s Conservative Party has confirmed that Theresa May has been elected party leader \"with immediate effect\" and will become the country\'s next prime minister. Prime Minister David Cameron has said he will step down on Wednesday July 13, 2016 and May will immediately replace him. (AP Photo/Max Nash)

The shoes of Conservative Party Chairman Theresa May are seen on stage\nduring the unveiling of the conference set in the Winter Gardens in\nBlackpool ahead of her party\'s annual conference in Blackpool, northern\nEngland, October 5, 2003. The conference begins on Monday. REUTERS/Paul\nMcErlane\n\nPM/MD/AA

Conservative chairman Theresa May\'s shoes are pictured during her speech at\nthe party conference in Blackpool, October 6, 2003. REUTERS/Ian Hodgson\nPP03100050 WMNN\n\nMR/JV

BIRMINGHAM, ENGLAND - JULY 11: British Home Secretary Theresa May, shoe detail, launches her Conservative party leadership campaign at the IET events venue on July 11, 2016 in Birmingham, England. Theresa May MP and Andrea Leadsom MP are the last two remaining contenders in the leadership race to be Prime Minister of the United Kingdom after the resignation of David Cameron. (Photo by Christopher Furlong/Getty Images)

LONDON, ENGLAND - JULY 07: British Home Secretary and Conservative leadership contender Theresa May\'s shoes as she poses outside the Houses of Parliament on July 7, 2016 in London, England. Theresa May has the backing of 199 fellow MPs after the second ballot for the leadership of the Conservative Party. Receiving 84 votes, Andrea Leadsom MP joins May on the shortlist presented to the Conservative Party members after Michael Gove was eliminated with 46 votes. (Photo by Jack Taylor/Getty Images)

VALLETTA, MALTA - NOVEMBER 11: British Home Secretary Theresa May, shoe detail, receives a tour of HMS Bulwark during the Valletta Summit on migration on November 11, 2015 in Valletta, Malta. The Summit will bring together representatives from the European Union and African countries to address the challenges and opportunities of the largest migration of people to Europe since World War II. (Photo by Ben Pruchnie/Getty Images)

British Home Secretary Theresa May\'s shoes are pictured as she addresses media personnel outside the Cabinet Office in London on June 28, 2015, following a COBRA meeting. The British government cautioned Sunday that other attacks \'are possible\' in Tunisia after the mass shooting two days ago that left 38 people dead including at least 15 Britons. AFP PHOTO / NIKLAS HALLE\'N (Photo credit should read NIKLAS HALLE\'N/AFP/Getty Images)

BOURNEMOUTH, ENGLAND - MAY 20: The Home Secretary, Theresa May, Shoe Detail, addresses officers at the Police Federation annual conference on May 20, 2015 in Bournemouth, England. In her first speech since being reappointed Home Secretary, Mrs May said she wanted to stop the \'tick box culture\' of policing and warned officers to \'stop crying wolf\' as she spoke at the Bournemouth International Conference centre. (Photo by Matt Cardy/Getty Images)

HOLYPORT, UNITED KINGDOM - NOVEMBER 28: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) British Home Secretary Theresa May (shoe detail) awaits the arrival Queen Elizabeth II for a visit to Holyport College on November 28, 2014 in Holyport, England. (Photo by Max Mumby/Indigo/Getty Images)

HOLYPORT, UNITED KINGDOM - NOVEMBER 28: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) British Home Secretary Theresa May (shoe and handbag detail) awaits the arrival Queen Elizabeth II for a visit to Holyport College on November 28, 2014 in Holyport, England. (Photo by Max Mumby/Indigo/Getty Images)

BIRMINGHAM, ENGLAND - SEPTEMBER 30: Home Secretary Theresa May wears black shoes with a gold pattern on the heel as she addresses the Conservative party conference on September 30, 2014 in Birmingham, England. The third day of conference will see speeches on home affairs and justice. (Photo by Peter Macdiarmid/Getty Images)

LONDON, ENGLAND - MARCH 17: Home Secretary Theresa May wears diamond studded flat shoes as she launches HMC Protector on March 17, 2014 in London, England. The cutter is the fifth vessel to be added to the Border Force Fleet protecting the United Kingdom\'s coastline borders. The cutter will be based in Portsmouth and operate two 12 officer crews working alternate 14 day shift patterns, all year round. (Photo by Peter Macdiarmid/Getty Images)

The shoes of British Conservative Party MP Theresa May, a contender for the leadership of the party are seen during the 2005 Conservative Party Conference in Blackpool, England, Monday Oct. 3, 2005. (AP Photo/Paul Ellis)

The shoes of Britain\'s Shadow Secretary of State for Work and Pensions Theresa May are seen at the Conservative Party Conference, Manchester, England, Wednesday Oct. 7, 2009. Britain\'s Conservative Party is holding its last annual conference before next year\'s national election, which polls show is all but certain to put party back in power after more than a decade. (AP Photo/Jon Super).

A close up shot showing the leopard print shoes worn by Conservative Party Shadow Minister for Family Theresa May during her keynote speech at the Conservative Party annual conference in Bournemouth, England, Tuesday Oct. 5, 2004. (AP Photo/Richard Lewis)

MANCHESTER, ENGLAND - OCTOBER 05: The shoes of Shadow Secretary of State for Work and Pensions Theresa May as she addresses delegates at the Conservative Party Conference on October 5, 2009 in Manchester, England. Britain\'s Conservatives are meeting in Manchester this week for their final party conference before next year\'s general election. (Photo by Christopher Furlong/Getty Images)

CHELTENHAM, ENGLAND - APRIL 26: Theresa May MP and Shadow Secretary of State for Work and Pensions and Shadow Minister for Women shows off her distinctive shoes as she speaks at the Conservative Party Spring Forum on April 26, 2009 in Cheltenham, England. The leader of the opposition David Cameron called for massive change following the country\'s descent into its deepest recession since the second world war. (Photo by Matt Cardy/Getty Images)

CHELTENHAM, ENGLAND - APRIL 26: Theresa May, MP and Shadow Secretary of State for Work and Pensions and Shadow Minister for Women shows off her distinctive shoes as she waits for the arrival of the leader of the Conservative Party, David Cameron at the Conservative Party Spring Forum on April 26, 2009 in Cheltenham, England. The leader of the opposition is expected to underline his commitment to impose a \'culture of thrift\' on Whitehall if the Conservatives win power in the next election, and blaming Labour\'s \'irresponsibility\' for plunging Britain into the deepest recession since the second world war. (Photo by Matt Cardy/Getty Images)

BLACKPOOL, UNITED KINGDOM - SEPTEMBER 30: Conservative shadow leader of the House of Commons Theresa May sports a pair of Wellington boots as she addresses delegates at the 124th annual Conservative Party Conference at the Winter Gardens on September 30, 2007 in Blackpool, England. Party Leader David Cameron today called for British Prime Minister Gordon Brown to call a snap election and added that the conservatives can win. (Photo by Christopher Furlong/Getty Images)

LONDON, ENGLAND - DECEMBER 13: Conservative MP Theresa May wears flat shoes with a bow to the Children of Courage Awards at Westminster Abbey on December 13, 2006 in London, England. (Photo by Tim Graham/Getty Images)

BOURNEMOUTH, UNITED KINGDOM - OCTOBER 03: The shoes of Conservative Party MP Theresa May are pictured as she chairs a discussion at the Bournemouth International Centre during the annual party conference on October 3, 2006 in Bournemouth, England. Mr Cameron has insisted that he will not back tax cuts, his Shadow Chancellor, George Osborne added \' Promising cuts now is not a credible route to power\'. (Photo by Daniel Berehulak/Getty Images)

BLACKPOOL, UNITED KINGDOM - OCTOBER 03: The soles of Theresa May\'s shoe are seen during her speech to the Annual Party Conference, October 3, 2005 in Blackpool, England. The opposition Conservative Party are holding their yearly conference in the Lancashire seaside resort until October 6, 2005. (Photo by Bruno Vincent/Getty Images)

LONDON - APRIL 22: Conservative Party Shadow Secretary of State for Family Theresa May\'s shoes are seen at their morning press conference on April 22, 2005 in London, England. The Conservatives are outlining their policy on crime and attacking Labour\'s record on policing, saying officers are being hampered by excessive bureaucracy when they should be fighting crime. (Photo by Graeme Robertson/Getty Images)

BOURNEMOUTH, ENGLAND - OCTOBER 5: The shoes of Theresa May, Shadow Secretary of State for the Family from Britain\'s Conservative Party are seen as she delivers her speech during day two of the Conservative Party Conference on October 5, 2004 in Bournemouth, England. The Tory party is in great need of a confidence boost in the wake of a heavy defeat in the Hartlepool by-election, in which they finished fourth behind Labour, the Lib Dems and the United Kingdom Independence party. (Photo by Scott Barbour/Getty Images)