Lady GaGa has announced 21 European gigs including two British shows..

The 'Judas' hitmaker will perform at London's Twickenham Stadium on September 8 and Manchester's MEN Arena three days later after kicking off her Born This Way Ball tour in Sofia, Bulgaria on August 14.

She wrote on twitter: ''ATTENTION EUROPEAN LITTLE MONSTERS: THE BORN THIS WAY BALL FIRST 21 DATES ARE HERE. #ImGoingToTheBTWBall (sic).''

Gaga's stage set for her tour - which will be completed in Barcelona on October 6 - will feature a gothic medieval castle, and a semi-circular ramp that will extend into the crowd and create a 'Monster Pit' around the main stage.

The 26-year-old singer will be supported by rockers The Darkness throughout her run of gigs, and she has previously revealed how she has been getting in shape in preparation for her tour.

She recently tweeted: ''Hot yoga time, post rehearsal. Though my ass is kicked from dancing I may succumb to the heat and focus on conditioning. No pain, no fear.''

Lady Gaga European tour dates 2012:

Aug 14, Sofia, Bulgaria, Vasil Levski National Stadium

Aug 16, Bucharest, Romania, Arena Nationala

Aug 18, Vienna, Austria, Wiener Stadthalle

Aug 21, Vilnius, Lithuania, Vingis Park

Aug 23, Riga, Latvia, Riga Mezaparks

Aug 25, Tallinn, Estonia, Tallinn Song Festival Grounds

Aug 27, Helsinki, Finland, Hartwall Areena

Aug 30, Stockholm, Sweden, Ericsson Globe

Sep 2, Copenhagen, Denmark, Parken Stadium

Sep 4, Cologne, Germany, Lanxess Arena

Sep 8, London, England, Twickenham Stadium

Sep 11, Manchester, Manchester Arena

Sep 15, Dublin, Ireland, Aviva Stadium

Sep 17, Amsterdam, Netherlands, Ziggo Dome

Sep 22, Paris, France, Stade de France

Sep 24, Hanover, Germany, TUI Arena

Sep 26, Zurich, Switzerland, Hallenstadion

Sep 29, Antwerp, Belgium, Sportpaleis

Oct 2, Milan, Italy, Mediolanum Forum

Oct 4, Nice, France, Stade Charles-Ehrmann

Oct 6, Barcelona, Spain, Palau Sant Jordi