The Most Intriguing Billionaire Heiresses

Forbes has compiled the list of the most intriguing billoinaire heiresses. Under 40 and hailing from around the world, the heiresses are ranked according to their father's or mother's most recent net worth on either Forbes' World's Billionaires list, the Forbes 400 list of the Richest Americans or Forbes Asia's 40 Richest Indians.

Vanisha Mittal tops the ranking. Daughter of Indian-born, London-based steel magnate Lakshmi Mittal, Forbes estimates his net worth at $51 billion. Like her brother, Vanisha is active in her father's industrial empire, holding a seat on Mittal Steel's board after interning in the business. She's perhaps best known -- dare we say infamous -- for the $60 million wedding her father threw her and 1,000 of their closest friends in 2005. A performance by pop star Kylie Minogue capped the week-long Parisian affair.

Number two on the list: Delphine Arnault Gancia, daughter of France's Bernard Arnault ($26 billion), who runs the Moet Hennessy Louis Vuitton luxury goods empire