Wonder Girls opened a dance off competiton for their song "Like Money." The  girl group first began their entry to the American market in 2009 with their worldwide hit "Nobody" as an opening act for The Jonas Brothers' World Tour. Now returned with an infectious track "Like Money," featuring hip hop artist and producer Akon making headlines again.

Today, Wonder Girls opened a dance off competition online, where fans have the chance to learn the 'Like Money' dance, film it, and post it online for a chance to win the vote.

Wonder Girls posted a YouTube video of the members dancing to their song "Like Money," and are challenging internet users to upload their own version on the dance off website. The winner will be chosen soley through fan votes via TopBlip, Facebook, and Twitter.

The grand prize winner of this competition will win 1 exclusive JYP/monster headphones, a Wonder Girls swag bag, autographed 'Like Money' CD album, and a handwritten letter from Wonder Girls on an exclusive polaroid picture.

The deadline for the dance off videos is September 23, and the website has a timer that shows how many days, hours, and minutes are left to the tournament.

More information can be found on the tournament website.