In what movie, witches eat stars to stay young?

Stardust, this film mainly tells the story of Tristan, a young boy, falling in love with Victoria, a girl from the same village. One day, they saw a meteorite. In order to please their girlfriend, Tristan promised to give it to her, and then embarked on a journey of searching. However, witches and mysterious pirates came one after another. In order to make themselves stronger, both of them tried to seize the meteorite.

Stardust is a fantasy adventure film in 2007, which is adapted from neil gaiman's novel of the same name, directed by Matthew Vaughn and starring charlie cox, claire danes and michelle pfeiffer. It was released in the United States on August, 2007 10.