Greatest Hits is the first greatest hits collection by British all-female pop group the Spice Girls. It is also their first album to be released in seven years and is supported by an accompanying world tour. It received a physical release worldwide throughout November 2007, except for the United States where it received a limited release on 6 November 2007 and a full release on 15 January 2008. The plan to reform and release a greatest hits had long been speculated by the media, but its planned release was first confirmed by Melanie Brown in June 2005. Speaking just before a planned reunion for Live 8 (that never actually materialised due to Brown's contractual agreements in L.A.), she stated: "We'll get back together because we all want to. I know everyone is up for it. There is going to be a greatest hits album and we've got loads of new songs that nobody has heard yet." When the Spice Girls reformed in 2007, Melanie Chisholm said to a journalist that EMI had planned a greatest hits album, so the girls found it appropriate to go on the Return of the Spice Girls tour.