By Iris Edén Santiago Special to The Star And the winner is, Sharon Stone. Hands down. With a triumphant look on her face, the actress made a fabulous display of glamour and charisma at each and every appearance on the Red Carpet during the 75th Annual Cannes Film Festival, which ended on Saturday. In an event where hundreds of actresses and celebrities wear only the best and most exclusive custom gowns, it is not easy to stand out and make headlines. It takes confidence, exp