The former first lady was greeted on stage at the O2 in London on Sunday night by tears, screams and a standing ovation. Obama was at the 20,000-capacity arena to promote her book, Becoming, which charts her journey from Chicago to the White House. The memoir has sold more than 10m copies worldwide since it was published in November. Her appearance at the event followed a similar one at the capital's Southbank Centre in December, which sold out within minutes. The Becoming tour has taken Obama to Amsterdam, Copenhagen, Paris, Oslo and Stockholm, as well as a string of events across the US and Canada.

Michelle Obama gets rock-star reception at O2