Hermione goes wild! Emma Watson boogies away her blues at Harry Potter party

By GEORGINA LITTLEJOHN What would Hermione say? Emma Watson hits the dancefloor and boogies away her blues at Harry Potter partyShe got very teary as she said a fond goodbye to the last ten years of her life at the premiere for the last ever Harry Potter film.So it's hardly surprising that Emma Watson wanted to let off some emotional steam after it was all over. The actress, who has played