Singer will play the festival's Big Top Stage
Singer also says she 'never says anything just to rhyme over sugary pop songs'
The 'Born To Die' singer played at a Mulberry event in the capital
Songstress recorded the track as a duet with rapper Smiler in 2010
Singer's label president says 'loads of brilliant tracks' are already lined-up for 'Born To Die' follow-up
The 'Born To Die' singer has been seeing Barrie James O'Neil for six months
Boy wizard defended 'Video Games' star's appearance without hearing it
Maverick Sabre, Van Halen and Young Guns are also set to go Top 10 this weekend
The 'Born To Die' singer allegedly pulls 30 date tour of the United States
Singer's debut album sells more than 100,000 copies to become fastest seller of 2012