ensued and Lott parted ways with the Island Def Jam Music Group, to sign with Mercury Records in the UK and to Interscope Records in the U.S. Lott signed a publishing deal, as a songwriter, with Sony/ATV Music Publishing in December 2007, while writing and recording tracks for Turn It Up. Lott wrote a song for Alexandra Burke's debut album, Overcome (2009), titled "You Broke My Heart" and a song for Girls Can't Catch titled "Happy Alone". She also wrote two tracks on Lisa Lois's (the Dutch X Factor winner) debut album Smoke (2009), titled "No Good For Me" and "Promises, Promises". She also wrote 'We Own the Night' with Toby Gad for Selena Gomez and ended up featuring on the track too for Gomez' album When the Sun Goes Down. Lott played her first festival concert in the Big Top at the Isle of Wight Festival 2009, during her first full British tour, where she supported The Saturdays on The Work Tour. Lott's debut single, "Mama Do", was released on 8 June 2009. It spent one week at number one, 11 weeks within the top 40 and 18 weeks within the top 75. The single also had considerable success outside the UK, reaching the top 40 in 11 other countries, including top ten peaks of number eight in Denmark and number 10 in France. The single was certified silver by the British Phonographic Industry on 28 August 2009 after selling over 200,000 copies in the United Kingdom. On 15 August 2009, Lott was featured alongside Hoobastank, The All-American Rejects, Kasabian, Boys Like Girls, Estranged and Raygun as one of the live acts at Asia's very first MTV World Stage Live in Malaysia concert. Lott's second lead single "Boys and Girls" was released on 6 September 2009 and topped the UK Singles Chart on 13 September. On 14 September, Lott's debut album, Turn It Up was released. This followed an intensive promotional tour where Lott visited the Asia-Pacific region to promote the album and 'Mama Do'. The album debuted at number six on the UK Album Chart, and sold over 600,000 copies in the United Kingdom. In August 2010, it was certified Double-Platinum by the British Phonographic Industry. Lott's third single from the album, "Cry Me Out" was released on 23 November 2009. It was during this time that Lott was chosen as the face of Nokia's "Illuvial Pink Collection"