Bop Bop Baby is a song by Irish boy band Westlife and it was released on 20 May 2002 as the third and final single from their third studio album, World of Our Own. The single peaked at number five on the UK Singles Chart; during an interview, the band claimed this was due to the obscure choice of single, as they would have much preferred to release Why Do I Love You – and had even recorded a video for it. It is the band’s 18th-best-selling single in paid-for sales and in combined sales in the United Kingdom as of January 2019.