Madonna has announced she will play dates at London's O2 arena and Manchester's MEN Arena in July as she restarts her Sticky and Sweet tour.
Tickets for the shows - on 4 and 7 July - will go on sale on 6 February.
The singer, who has never extended a tour before, announced 16 extra European dates. Paul Oakenfold will open for her at all of them.
Madonna said she was "excited to be visiting places I've never been and returning to places I love".
She originally finished her Sticky and Sweet world tour when the South American leg concluded in Sao Paulo on 21 December after beginning in Cardiff in August.
Sticky and Sweet is already the biggest-selling tour by a solo artist - taking $281.6m (£193m) worldwide, according to music trade publication Pollstar.
It is a showcase for the star's most recent album, Hard Candy, but also features her back catalogue with songs such as Vogue, Hung Up and Ray Of Light getting an airing.
The tour also takes in stadium dates in Milan, Barcelona and Munich, as well as dates in Oslo, Helsinki, Hamburg, Prague and Warsaw, with further dates planned in Bulgaria, Hungary, Russia, Romania, and Serbia.