Celebrity dolls of pop stars are one of the most popular types. One of the best-selling celebrity dolls of all time is the Britney Spears doll, made in 1999. Other extremely successful dolls include the Spice Girls (selling over seven million dolls), New Kids on the Block (selling over two million dolls) and Christina Aguilera dolls (selling over six million dolls). Mary-Kate and Ashley Olsen Dolls were also popular from 1999-2004. Dolls of Lindsay Lohan, Hilary Duff, Destiny's Child, and Raven-Symoné were been made in 2005-2006. Recently, dolls based on characters in Disney Channel movies and TV series, such as, High School Musical, Hannah Montana, the Cheetah Girls and Aly & AJ have been released and are expected to be big sellers.