What Will the Neighbours Say?

What Will the Neighbours Say? is the second studio album by English-Irish all-female pop group Girls Aloud. It was released in the United Kingdom on 29 November 2004 by Polydor Records. Brian Higgins and his production team Xenomania were enlisted to produce the entire album, allowing for more inventive ideas. What Will the Neighbours Say? explores various subgenres of pop music.

What Will the Neighbours Say? became Girls Aloud's second top ten album in the United Kingdom. It debuted at number six on the UK Albums Chart, spending two further weeks in the top ten and a total of 17 non-consecutive weeks on the chart, and was eventually ranked 44th on the tally's 2004 year-end chart. On 10 December 2004, the album was certified Gold by the British Phonographic Industry (BPI). It reached Platinum status on 14 May 2010, surpassing sales of over 300,000 units. In 2024, the album's deluxe edition reissue, released on 8 March 2024, re-entered the UK Albums Chart at number 35. The same week, What Will the Neighbours Say? debuted a number six on the UK Vinyl Albums chart. On 26 March 2024, the album was certified double Platinum by the BPI for shipments in excesss of 600,000 copies.