The song was a cover version of the Strangeloves song. On 30 March, she released her fourth album, "This Time", with thirteen tracks – six written by Chisholm – and other two cover versions: "What If I Stay" and "Don't Let Me Go", by Jill Jackson, from her debut album. The album peaked at number 57 in the UK and number 8 in Switzerland, which was certified gold. "Carolyna" was released as the third single on 8 June. During an interview at "Loose Women", Chisholm revealed that she wrote this song after watching a documentary about young adults and teenagers homeless, living in the streets in Seattle. The song peaked at 49 in the UK, and in the top 50 in other countries. On 28 June 2007, the Spice Girls held a surprise press conference at The O2 Arena revealing their reunion for embark in a worldwide concert tour, The Return of the Spice Girls, starting in Vancouver on 2 December. They received £10 million each for the tour. Filmmaker Bob Smeaton, directed an official documentary on the reunion. It was entitled "Giving You Everything". At the same time, Chisholm released the fourth single of her album, "This Time", features the B-side "We Love to Entertain You", which was used for 2007's Pro7 Starforce campaign in Germany. The song peaked at number 94 in the UK and 69 in Germany. On 5 November, the Spice Girls released their return single, "Headlines (Friendship Never Ends)", also announced as the official Children in Need charity single and performed at Victoria's Secret Fashion Show. The song peaked at number 11, becoming the first song to not reach the top 10. The music video was directed by Anthony Mandler and the girls used exclusive clothes designed by Roberto Cavalli. They released a compilation album, the "Greatest Hits" in November, including the singles, the 1997 Pepsi's theme "Move Over" and two new songs, "Voodoo" and "Headlines (Friendship Never Ends)". The compilation sold 6 million copies. They embarked on the tour on 2 December, traveling for 47 dates until 26 February 2008. The tour is estimated to have grossed over US$70 million and produced $107.2 million in ticket sales and merchandising. The tour won the 2008 Billboard Touring Award. As well as their sell-out tour, the Spice Girls were contracted to appear in Tesco advertisements, for which they were paid £1 million each.