Chelsea Clinton

Who's the Democrat? Chelsea Clinton. Unsurprisingly, Bill and Hillary's only child has inherited her parents' political leanings and dogged determination to change the world.

What's her style? Yes, she can do chic power suits like her mother - but Chelsea also knows how to turn on the glamour, as demonstrated at this year's Costume Institute Gala, where she wore this amazing Oscar de la Renta red gown. And earlier this year, Chelsea starred in a shoot for Vogue - modelling designs by Burberry and Marc Jacobs. Get her!