Middleton's first public appearance with Prince William following the announcement of their engagement was at a fundraising event organised by the Teenage Cancer Trust in December 2010. She was formally introduced to public life on 24 February 2011, two months before the wedding, when she and Prince William attended a lifeboat-naming ceremony in Trearddur, Anglesey, in North Wales. A day later they appeared in St Andrews to launch the university's 600th anniversary celebrations. In March 2011, the couple toured Belfast. Their last public engagement before the wedding was a visit to Darwen Aldridge Community Academy. The Duchess's first official engagement after the wedding came in May, when she and her husband met Barack Obama, the President of the United States, and First Lady Michelle Obama at Buckingham Palace. The Duke and Duchess's first royal tour of Canada took place in July 2011. The couple's activities included attending celebrations for Canada Day. The tour included a two-day trip to California. This was Duchess's first visit to the United States. On 26 October 2011, she undertook her first solo engagement at a reception for In Kind Direct, hosted at Clarence House, stepping in for the Prince of Wales.