JUSTIN Timberlake stayed true to his word and accompanied a US Marine to a military ball after she invited him via YouTube, Radar Online reports.
Timberlake accepted Corporal Kelsey De Santis' invitation to the Marine Corps Ball in Virginia, during a July promotional event for his movie, Friends with Benefits.
His costar Mila Kunis had previously agreed to attend another Marine Corps Ball in North Carolina with Sgt. Scott Moore after he asked her to be his date - also through a YouTube video.
Timberlake wore a tuxedo to the event and stayed with De Santis throughout the entire evening, according to Radar.
Another Marine who attended told People, "We all brought sexy back! Justin seemed to have a good time, and it was great to see him there."