Soldier primed for big night out with Justin Timberlake

The pretty soldier who invited Justin Timberlake to a Marine Corps ball in Washington, D.C. is all set for her big date on Saturday night (12Nov11).

Corporal Kelsey de Santis posted a video on YouTube.com and asked the pop star-turned-actor to be her date - and Justin Timberlake accepted.

That was back in July (11), after the Cry Me a River singer persuaded his Friends With Benefits co-star Mila Kunis to accept a similar invite to another upcoming military party - and now the big date is here.

De Santis, who is stationed at the Marine Corps base at Quantico, Virginia, admits she's not quite sure what to expect, but her friends have suggested she should challenge Timberlake to a dance-off.

She tells news show Access Hollywood says, "They know all about my skills... but I honestly don't think he'll be able to keep up with the group of people that I have. We have a whole table set up."

And she's not ruling out a romantic night: "I'm single... I guess that's up to J.T. and what his plans are. I would never force anything upon him or anything like that."

Mila Kunis will step out with Sergeant Scott Moore at another Marine Corps ball later this month (Nov11).