Allen began working on her full-length album with producers such as Greg Kurstin, Mark Ronson (with whom she also collaborated on a cover of the Kaiser Chiefs' "Oh My God" that appeared on her second mixtape), and Futurecut, and released a limited-edition 7" of LDN as her debut single in spring 2006. Both LDN and Smile, which followed that summer, were chart successes, with the former reaching number seven on the U.K. chart and the latter hitting number one the week it debuted. Hot on the heels of Smile came Allen's first full-length, Alright, Still, which she supported with a slew of dates stretching out to the end of the year. Despite the speed of her success, Allen continued to update her MySpace page with amusing blog rants, including one about her June 2006 appearance on Top of the Pops that berated the lead singer of the Kooks for "wearing broken straw hats and dark sunglasses" indoors and Dirty Pretty Things for having "organic sliced bread on the rider." Allen rang in 2007 with more tour dates, including gigs in Japan, Australia, and the U.S., and the U.S. release of Alright, Still. She also earned nominations for British Breakthrough Act and British Female Solo for that year's Brit Awards, while "Smile" and Alright, Still were nominated for British Single and British Album, respectively.
Allen spent most of 2007 touring, but also collaborated with Dizzee Rascal on Maths and English's duet "Wanna Be," and provided vocals on Basement Jaxx's Crazy Itch Radio. Allen's personal life and side projects were nearly as prominent as her music career, with her relationship with Chemical Brother Ed Simons and her subsequent miscarriage making headlines in late 2007 and early 2008. In February 2008, Allen embarked on a talk show on BBC Three, Lily Allen and Friends, which lasted through that April. That month, Allen posted two new demos on her MySpace page, including "GWB," which was about President George Bush; for her second album, she worked with producer Greg Kurstin of the Bird and the Bee, and co-wrote several songs with him instead of just providing the lyrics. She also worked on songs with Jamie Reynolds of the Klaxons and wrote a song about comedian James Corden for the 2008 Shockwaves Awards. Another new song, "Everyone's at It," debuted that fall, and Allen courted controversy again with an unauthorized cover of Britney Spears' "Womanizer" that December. It's Not Me, It's You, which covered topics like drugs, fame, family, and society, arrived early in 2009, preceded by the single The Fear. Despite the album's success, which included platinum certification in the U.K. and debuting at the top of the charts in the UK, Canada and Australia (and at number five in the U.S.), in September 2009 Allen did not renew her record contract and took a hiatus from making music.
She remained busy, founding her own label In the Name Of, which included Cults on its roster, writing songs for the musical version of Bridget Jones' Diary, and starting a family with her boyfriend Sam Cooper, whom she married in June 2011. The following year, she announced she would be professionally known as Lily Rose Cooper and that she was in the studio working on new music with longtime producer Greg Kurstin. Cooper also appeared on P!nk's 2012 album, The Truth About Love. She then recorded a cover version of Keane's "Somewhere Only We Know" for U.K. retailer John Lewis' 2013 holiday TV commercial, which went on to become her third U.K. number one single. Soon after, single "Hard Out Here" was released and was the first song to appear from her third record Sheezus, which was due in 2014. ~ Heather Phares, Rovi