The Motorola sponsored Spring Racing Carnival in Melbourne is due to have a special guest â€“ Superman star Kate Bosworth.

After filming Superman in Sydney, another visit back to Australia interested the thin actress who will be the star attraction on Derby Day on November 4.

And it will give her a chance to put hundreds of thousands of kilometers between her and Orlando Bloom after the pair split recently. Though she has been seen with another man in New York – pictured left.

Other names were bandied about as potential star attractions, from Liv Tyler, Carmen Electra and Eva Herzigova.

The Spring Racing Carnival attracts big names to the city of Melbourne every year, with names like Eva Longoria and Paris and Nicky Hilton visiting for the races.