Getting a phone call from Emma Watson, Harry Potter actor and fashion muse, was "a bolt out of the blue" for 48-year-old Mancunian Mark Demsteader, who has painted a series of portraits to mark the star's 21st birthday. Watson was enquiring about the artist's work, but he persuaded her to sit for photos. It then took three months to produce the 34 artworks that will be on show at the Panter & Hall Gallery from 15 June 2011