What is the highest grossing tour for a female artist?

Madonna has broken her own record (2006 Confessions Tour) as the biggest solo artist and female tour ever with Sticky and Sweet 2008. http://www.billboard.com/bbcom/yearend/2008/charts/top25-tours.shtml

"With the completion of Madonna's final show in Sao Paulo Brazil last evening - one of eleven record-breaking performances in South America - the 'Material Girl's''Sticky & Sweet' Tour reigns supreme by becoming the Number One Largest Grossing Tour in history by a solo artist, it was confirmed today by Live Nation, the tour's international producer. Her 58 shows in Europe, the US, Canada, Mexico and South America played for a staggering 2,350,282 million fans and sold over (USD)280,000,000 in tickets".