Zara

Most of the richest women in the world have one thing in common: It was their husbands or fathers who actually earned the wealth. But while Australian mining magnate Gina Rinehart inherited $75 million from her dad, it was by her own efforts that she multiplied that sum -- 386 times.

Their brands aren't well known in the U.S. yet, but experts suggest you keep an eye on these seven emerging retailers with hot store concepts that are ripe for expansion. They could soon be headed to a mall near you.

The return of traditional office clothing, inspired by hip-hop artists, hipsters, and Hollywood, is good news for some low-cost retailers.