LOS ANGELES: Lady Gaga has been forced to change venues for her upcoming concerts in Detroit, Michigan and Chicago, Illinois - because the theatres are too small to house her big production.

The Poker Face hitmaker takes her Monster Ball Tour to Detroit next week (12-13Jan10) and she has been forced to move the concerts to a larger stage.

The dates have been shifted from the 5,000-capacity Fox Theatre to the 20,000-seat Joe Louis Arena.

Three upcoming Chicago shows have also been transferred from the Chicago Theatre to the bigger Rosemont Theatre.

Promoters at Live Nation have blamed the "size of the production" on the venue change.