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 (GBP20.5 million) last year (06) 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 (GBP6.6 million) in 2006 to come in second. Actresses Lindsay Lohan, Dakota Fanning and Amanda Bynes rounded out the top five on the new list.