Posh will reveal their new home strip for the 2015-16 season at a special event at Serpentine Green on Sunday, July 5.
The club are working closely with shirt sponsor Mick George Ltd on two hours of entertainment and two young Posh fans will be invited to model the junior kit on the day.
To win this prize just e-mail firstname.lastname@example.org nominating a child and explaining why they deserve to be winners. The lucky children will be able to keep the kit after their modelling session.
The deadline for entries is Tuesday, June 30 and the winners will be announced on July 1.
The entertainment gets under way at 11am with a cheerleading display and a question and answer session with manager Dave Robertson and his assistant Grant McCann.