First look at Emma Watson in her new role

Emma Watson is back in London for additional filming on the final part of Deathly Hallows, and has also donned a wig over her newly-short hair to play the small but important role of Lucy, an assistant in the wardrobe department at Pinewood studios in 1956 in My Week With Marilyn.

The film is based on a memoir by Colin Clark (played by Eddie Redmayne), who worked as Laurence Olivier's assistant on the picture The Prince And The Showgirl, and who, during an intense period of filming, became Marilyn Monroe's confidant.

But he flirted with Lucy as much as possible in between takes. Clark described Lucy as 'one of the prettiest little girls I have ever seen in my life... slim as a wand, curly brown hair, huge brown eyes and a wide cheeky grin.'

Lucy and Clark had a few dates which, according to his book The Prince, The Showgirl And Me (a precursor to My Week With Marilyn), usually involved Clark whizzing her up to London in his Bristol sports car, visiting a club and going on to his parents' 'set' at The Albany, where 'she kisses like an angel'.