The Greatest Hits is the first compilation album released by the British girl group Atomic Kitten; the album was released following the announcement of the group's split. It was released in the United Kingdom on 5 April 2004 by Virgin Records. It contains all of the group's chart hits from the group's three studio albums Right Now (2000), Feels So Good (2002) and Ladies Night (2003). "Right Now 2004" was released as the album's lead single on 29 March 2004. Although Kerry Katona does not appear on the cover of the album, her vocals do appear on "I Want Your Love" and "See Ya", although Frost's vocals appear on "Whole Again", which Katona originally featured on.
The album peaked at #5 in the UK and was certified Gold. The album has been released with the Copy Control protection system in some regions.
AllMusic editor Andy Kellman wrote that "a European release, Greatest Hits should provide just about anyone with all the Atomic Kitten that's necessary [...] It touches on each of the group's studio albums with a strong emphasis placed on the single [...] Why the US powers that be never gave this group (and Sugababes) more of a chance is anyone's guess."[1] Annabel Leathes from BBC Music felt that "if this hits collection is to be their parting gift, then weeping fans will not be disappointed. The album features fifteen tracks from the felines, most of which are a fair representation of the Kittens' consistent chart success."[2]