Already massive pop stars in their native Australia, 24-year-old twin sisters Lisa and Jessica Origliasso, known as The Veronicas, spent most of last year winning over legions of new fans while touring with Natasha Bedingfield, Hanson, and the Jonas Brothers in support of their red-hot second album Hook Me Up. “Untouched,” the first single from this electro-rock sizzler album, is the girls’ first-ever platinum record in the U.S.

The girls' musical style has evolved quite a bit since the release of their debut album, The Secret Life Of … which sold more than 300,000 copies in Australia. The Secret Life Of … featured catchy pop-rock tunes, but Hook Me Up finds the girls exchanging this pop-punk style for a dynamically unrestrained electro-beat. The Veronicas sought to reinvent themselves by taking this album in a new direction, and they have done just that.

In the last few years, The Veronicas have recorded two amazing records, toured the world, and created their own clothing line. It doesn't look like things will slow down for the girls any time soon.