Allen promoted the album worldwide . While being invited to Scott Mills ' BBC Radio 1 show , Allen talked about her struggles with the paparazzi and also premiered " The Fear " by performing it live . Other live performances of the song include the '' Sound '' on BBC 2 with Nick Grimshaw and Annie Mac , '' Friday Night with Jonathan Ross '' , the Orange unsignedAct and '' The Sunday Night Project '' . In February 2009 , she was invited at '' The Today Show '' with Matt Lauer , where she performed the song after an interview . The same month , she made an appearance on '' The Ellen DeGeneres Show '' , and while she was singing , DeGeneres freely dispensed copies of '' It 's Not Me , It 's You '' to the audience . Afterwards , both Allen and DeGeneres performed a rendition of Britney Spears 's " Womanizer " . Allen included the song on the setlist of her It 's Not Me , It 's You World Tour , as part of the encore . " The Fear " was also performed at the 2010 Brit Awards , as the opening song . Allen arrived on stage sitting on a rocket hoisted in the air , while wearing a black corset dress . She was later joined on stage by paratroopers dressed in pink military camouflage and women with Silver Cross prams . She performed " The Fear " and " Fuck You " in France on '' Le Grand Journal de Canal '' and sang " The Fear " on NRJ Radio
2010 Brit Awards
2010 Brit Awards
It's Not Me, It's You