Chemistry: The Tour was the second concert tour by British all-female pop group Girls Aloud. It supported their third studio album, Chemistry. Following the success of 2005's What Will the Neighbours Say...? Tour, Girls Aloud performed in arenas across the United Kingdom for the first time. Girls Aloud announced tour dates in October 2005. They performed just ten dates, making it their shortest tour. The tour began in Nottingham on 22 May 2006 and concluded in London on 3 June 2006.