The singer will now play two dates in the capital this June
"I refuse to stay passive about men systematically subjecting me to extreme fear," says singer
Artists react negatively to review of Australian rapper's debut album 'The New Classic'
The singer will play London's Brixton Academy on June 6
Singer has chest infection and plans to reschedule shows for later in 2014
Teenage singer poses for a picture with Kansas City Royals veteran George Brett in Las Vegas
In a series of tweets, which have since been deleted, the singer also asks audience members to wear rainbow colors in support of gay rights
US singer covered Number One hit during recent Auckland show
The song is taken from the producer's forthcoming EP
The New Zealand born singer's manager says she will play 16 dates stateside