<P> In 2004, she released the Greatest Hits album, with three new tracks . As of 2012, it had sold over 4.15 million copies in the US . The first single, the multi-format duet "Party for Two", made the country top ten with Billy Currington, while the pop version with Sugar Ray lead singer Mark McGrath made top ten in the United Kingdom and Germany . The follow - up singles, "Don't!" and "I Ain't No Quitter" did not fare as well . The former made Top 20 on Adult Contemporary, while the latter did not gain enough airplay to reach the Country Top 40 . </P> <P> In August 2005, she released the single "Shoes" from the Desperate Housewives soundtrack . In 2008, Twain and Anne Murray recorded a duet version of Murray's hit "You Needed Me" for her 2007 album, Anne Murray Duets: Friends & Legends . </P> <P> In June 2009, Twain released a letter to her fans explaining the delays in the release of her next album, noting she had gone through personal pains and was focusing on raising her son Eja . In August 2009, at a conference in Timmins, Ontario, a spokesman for Twain's label said a new record from the singer was still "nowhere in sight". </P> <P> In May 2011, Twain confirmed in an interview that she would release her first new single in six years, "Today Is Your Day", after the finale of Why Not? with Shania Twain . Twain previewed the song in the first episode of the series . Twain worked with music producers David Foster and Nathan Chapman on the song . She also published her autobiography with Atria Books, From This Moment On . The last episode of "Why Not?" features Twain and Lionel Richie recording "Endless Love" which would be the first single from his 2012 album, Tuskegee . "Today Is Your Day" was officially released to iTunes and country radio on June 12, 2011 . In addition to "Today Is Your Day", Twain also collaborated with Michael Bublé on his 2011 album Christmas (also produced by David Foster). Twain recorded "White Christmas" with Bublé, which was the first single from the album . On June 8, 2011, at a press conference at the Country Music Hall of Fame in Nashville, Twain announced that she would headline Caesars Palace in Las Vegas for two years . Her show, titled Still the One, began on December 1, 2012, with shows expected to run in 2013 and 2014 . </P>

When did the best of me come out