Sisters Ashley and Mary-Kate Olsen have topped Forbes magazine's first-ever "Hollywood's Top Earning Stars Under 21" list. The 20-year-old twins earned an estimated $40 million last year from their retail empire to beat Harry Potter star Daniel Radcliffe to the top of the new rich list.

Radcliffe, who is currently wowing theatre fans in London by baring all onstage in "Equus," earned an estimated $13 million in 2006 to come in second. Actresses Lindsay Lohan, Dakota Fanning and Amanda Bynes rounded out the top five on the new list.