Star of ‘Twilight’ movie series of missions including prom season – to make sure every girl has the prom of her dreams. For this purpose, that is the new spokesperson DonateMyDress.org, a charity that collects  gently  used prom dresses  and give  them to teens in need. Although she is busy playing Twilight’s Alice Cullen in May, the girls across the country will prepare for the prom … and today, Ashley will be doing a live interview  on Twitter support the campaign. If you have any questions for the actress about her own experience of  the ferry, or about how you can…