Cassadee PopeTalk about girl power! This musician was the first ever woman to win NBC's singing competition series "The Voice" in 2012. Originally, she had been singing in pop rock band Hey Monday, but moved into a solo country career after her big victory. The Florida native's chart-topping record "Frame By Frame" was released in 2013. Sorry, gents! Cassadee is a taken lady -- she's been romancing All Time Low's Rian Dawson for years.