Michelle Obama's Europe Tour Diary, In Pictures

Michelle Obama speaks during her visit to the United States and Nato military base in Aviano, June 2015.

Michelle Obama holds children's clothing as she meets with women expecting babies at the United States and Nato military base in Aviano, Italy, June 2015.

Michelle Obama distributes food to people at the United States and Nato military base in Aviano, Italy, June 2015.

US First Lady Michelle Obama arrives at the United States Pavilion at the Milan Expo 2015 on 18 June, 2015, wearing Missoni.

US First Lady Michelle Obama cooks with young from the American School of Milan at the James Beard American Restaurant during a visit in Milan on 17 June, 2015.

US First Lady of the United States Michelle Obama waves goodbye to the UK as she boards the plane to Milan, 16 June 2015.

US First Lady Michelle Obama, in Christopher Kane, leaving the Churchill War Rooms with her two daughters Malia Obama and Sasha Obama, 16 Jun 2015.

US First Lady Michelle Obama, wearing Christopher Kane, poses with Samantha (in Peter Pilotto) and David Cameron during her visit of 10 Downing Street on 16 June, 2015.

US First Lady Michelle Obama, wearing Christopher Kane, departs 10 Downing Street on 16 June, 2015.

US First Lady Michelle Obama, wearing Mary Katrantzou, meets Prince Harry at Kensington Palace on 16 June, 2015.

US First Lady Michelle Obama (wearing Mary Katrantzou) smiles as she speaks to students as part of the 'Let Girls Learn Initiative' at the Mulberry School for Girls on 16 June, 2015

US First Lady Michelle Obama (in Mary Katrantzou) receives flowers and waves to young girls holding the American flag in the courtyard before an event as part of the 'Let Girls Learn Initiative' at the Mulberry School for Girls on June 16,

US First Lady Michelle Obama wears Preen as she arrives at Stanstead airport for a visit to London on 15 June, 2015.