Recently, Yenny of Wonder Girls revealed through her Twitter that the girls have arrived in Korea. Unfortunately, Yenny kept the reason why they were there secret, leaving fans to guess what the group was up to. But according to a related source, Wonder Girls are in Korea for their music video shooting of their title song from their upcoming album!�As you guys already know, they are currently preparing for their�U.S. debut album scheduled to release in May. For those of you who were hoping to hear about Wonder Girls' Korean comeback, don't worry because the girls are going to cross-promote their album in Korea and America. After the girls left after their Korean Nobody promotions in late 2008, the kpop scene began to fill up with other girl groups, but it looks like the pop quintet that reigned 2008 will be back soon. Stay tuned for further news about Wonder Girls' upcoming album on allkpop!