Tickets for the London dates of Madonna's world tour have gone on sale, with demand expected to be great.
Madonna is going to 'turn the world into one big dancefloor'
The singer added three extra dates at Wembley Arena after the original gigs on 1 and 3 August sold out. She will also play on 9, 10, 12 and 13 August.
A string of dates around the world will begin on 21 May in Los Angeles, while the singer's first UK date takes place in Cardiff on 30 July.
The Confessions on a Dancefloor tour is named after Madonna's number one album.
The chart topper's last tour in 2004 was the most successful of that year, according to Billboard magazine.
LONDON TICKET PRICES
Welsh National Opera's Tosca (Royal Opera House, Covent Garden) - £45-£180
Royal Ballet's Giselle (as above) - £4-£77
Billy Joel (Wembley Arena) - £50-£75
Bruce Springsteen (Hammersmith Apollo) - £47.50
Red Hot Chili Peppers (Earls Court) - £40
Take That (Milton Keynes Bowl, moved from Wembley Stadium) - £35-£40
Chas & Dave (Amersham Arms, New Cross) - £17.50
Tickets for the two dates at Wembley Arena range from £80-£160.
Sales for the concert at Cardiff's Millennium Stadium will take place on 21 April.
Members of the singer's fan club were given a chance to obtain tickets before they went on public sale.
Shortly after official sales opened, tickets for the Wembley concerts were being sold on internet auction site eBay, with a pair costing as much as £820.
The singer, who has already started rehearsals for the tour in the US, will have her costumes designed by Jean Paul Gaultier.
Other dates across Europe include Paris, Amsterdam, Rome and Hanover.
The Confessions on a Dancefloor album topped the charts on its debut in 29 countries and spawned two number one singles in the UK.