Young Millionaires

From Wikipedia:

Millionaires is an American electropop group consisting of two sisters, Melissa Marie and Allison Green. The group, formed in August 2007, is widely known for mixing heavily explicit lyrics with a heavy electropop backing. Their image and lyrics have generated strong controversy (mainly for using explicit words in nearly all of their songs), but they still maintain slight mainstream success[citation needed] and have a steadily-growing, dedicated fanbase. The group has released three EPs and a single "Stay the Night", which managed to chart for a short time in the UK. Their debut album is due to be released in mid-2013.