Does money buy you style?

Go, go, Giorgio.

According to our judges, Giorgio Armani, the classically clad Italian fashion entrepreneur, is the world's best-dressed billionaire. Others making the couture cut include Miuccia Prada, Ralph Lauren and Oprah Winfrey.

To rank the best (and worst) dressed billionaires, we turned to our readers, thousands of whom voted in our online polls. We balanced their votes with picks from Forbes.com editors and two well-respected fashion gurus: Simon Doonan and Robert Verdi.

Doonan is the creative director of Barneys New York and author of “Nasty: My Family and Other Glamorous Varmints,” while Verdi is famous as host of E!'s “Fashion Police.”