The two groups have joined forces to create a unique contest in conjunction with Prizeo.com to boost funds for the Jls Foundation and Cancer Research Uk.
Fans pay $1.60 (£1) per entry for the chance to win the ultimate day out in London with the two groups.
The lucky winner and four friends will watch One Direction during a gig soundcheck before being taken out to lunch by the stars of Jls, who will serenade them at the restaurant. They will then go to see One Direction perform at London's O2 Arena from a private box with Jls for company.
One Direction star Harry Styles says, "Hi we're One Direction and we're part of the Jls surprise prize draw in aid of the Jls Foundation," and Zayn Malik adds, "The Jls Foundation is raising funds for research into cancers affecting children, teenagers and young adults."
The winner will be announced on Christmas Eve (24Dec12).