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Band is planning to 3-week UK tour. But could this be their last together?
The tour is said to be culminating in a huge night at Wembley Stadium.
Girls Aloud have been planning a reunion to coincide with the 2012 Olympics, however, sources say that the reunion could also be a farewell.
The girls are all currently pursuing solo projects in music, acting and presenting but are said to be in the line up to perform at next year's Olympics.