Wonder Girls are a Korean girl group who were formed in 2007 through a TV series MTV Wonder Girls. The group consists of Sun, Yenny, Mimi, Sohee and Yubin. After success in their home country, the pop quintet were chosen to support the Jonas Brothers during the North American leg of their 2009 World Tour. In conjunction, "Nobody" was released as their first US single. When the song entered the Billboard Hot 100 a few months later, Wonder Girls became the first Korean act to enter the chart.