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Meeting Michelle Obama twice 'amazing'

25 May 2011 Last updated at 17:56 BST

Gabrielle Watts first met Michelle Obama at the Elizabeth Garrett Anderson school in 2009, but said seeing her again at Oxford University was "more exciting".

On the second day of President Barack Obama's state visit Mrs Obama made a speech at Oxford University and took questions from a group of British schoolgirls she met during a previous visit to the UK.