Madonna has been named the hardest working mother in showbusiness - topping a new poll ahead of Reese Witherspoon and Gwyneth Paltrow.

The pop superstar took home $110 million in 2008, putting her at the forefront of high-earning women with children, according to Forbes magazine.

Madonna, who is mom to adopted tot David Banda, three, Rocco, eight and 12 year old Lourdes, took most of her money from her world tour as well as record sales and a string of endorsement deals. She split from husband Guy Ritchie last year.

The singer came ahead of divorced mother-of-two Witherspoon who took home $24 million in 2008. The actress has two kids, Ava, nine, and son Deacon, five, with ex-husband Ryan Phillippe. Paltrow, who also has two children, with husband Chris Martin, came in third with earnings of $20 million.

Mother of three Julia Roberts captured the fourth spot, while actress Sarah Jessica Parker, who has a son with husband Matthew Broderick, rounded out the top five.

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(This news article provided by World Entertainment News Network)