First Lady Michelle Obama meets with Prime Minister David Cameron and his wife Samantha Cameron for tea at 10 Downing Street, London, England, June 16, 2015.

First Lady Michelle Obama meets with Prime Minister David Cameron and his wife Samantha Cameron for tea at 10 Downing Street, London, England, June 16, 2015.

First Lady Michelle Obama meets with Prince Harry for tea to discuss the "Let Girls Learn" initiative and support for veterans, at Kensington Palace in London, England, June 16, 2015.

First Lady Michelle Obama meets with Prince Harry for tea to discuss the "Let Girls Learn" initiative and support for veterans, at Kensington Palace in London, England, June 16, 2015.

First Lady Michelle Obama hugs LeBron James following the USA vs. France men’s basketball game at Olympic Park during the 2012 Olympic Games in London, England, July 29, 2012.

First Lady Michelle Obama hugs LeBron James following the USA vs. France men's basketball game at Olympic Park during the 2012 Olympic Games in London, England, July 29, 2012.

First Lady Michelle Obama watches the swimming finals and medal ceremonies at the Olympic Park Aquatics Center during the 2012 Summer Olympic Games in London, England, July 28, 2012.

First Lady Michelle Obama watches the swimming finals and medal ceremonies at the Olympic Park Aquatics Center during the 2012 Summer Olympic Games in London, England, July 28, 2012.

First Lady Michelle Obama greets former Olympic swimmer Summer Sanders, right, and her children, Skye and Spider, following a "Let’s Move! London" event at Winfield House in London, England, July 27, 2012. Sanders is serving as part of the U.S. delegation to the 2012 Olympic Games in London.

First Lady Michelle Obama greets former Olympic swimmer Summer Sanders, right, and her children, Skye and Spider, following a "Let's Move! London" event at Winfield House in London, England, July 27, 2012. Sanders is serving as part of the U.S. delegation to the 2012 Olympic Games in London.

First Lady Michelle Obama participates in a tug of war competition during a "Let’s Move! London" event at Winfield House in London, England, July 27, 2012.

First Lady Michelle Obama participates in a tug of war competition during a "Let's Move! London" event at Winfield House in London, England, July 27, 2012.

First Lady Michelle Obama talks with Joshua Wilkins-Waldron during a "Let’s Move! London" event at Winfield House in London, England, July 27, 2012.

First Lady Michelle Obama talks with Joshua Wilkins-Waldron during a "Let's Move! London" event at Winfield House in London, England, July 27, 2012.

First Lady Michelle Obama runs at an activity station during a "Let’s Move! London" event at Winfield House in London, England, July 27, 2012.

First Lady Michelle Obama runs at an activity station during a "Let's Move! London" event at Winfield House in London, England, July 27, 2012.

July 27, 2012 "Sonya Hebert captured this amusing moment as U.S. Olympic wrestler Elena Pirozhkova literally picked up the First Lady during a greet with Team USA Olympic athletes competing in the 2012 Summer Olympic Games in London."

July 27, 2012
"Sonya Hebert captured this amusing moment as U.S. Olympic wrestler Elena Pirozhkova literally picked up the First Lady during a greet with Team USA Olympic athletes competing in the 2012 Summer Olympic Games in London."

First Lady Michelle Obama is picked up by U.S. Olympic wrestler Elena Pirozhkova during a greet with Team USA Olympic athletes competing in the 2012 Summer Olympic Games, at the U.S. Olympic Training Facility at the University of East London in London, England, July 27, 2012.

First Lady Michelle Obama is picked up by U.S. Olympic wrestler Elena Pirozhkova during a greet with Team USA Olympic athletes competing in the 2012 Summer Olympic Games, at the U.S. Olympic Training Facility at the University of East London in London, England, July 27, 2012.