Kelsey De Santis Talks Marine Corps Ball Date With Justin Timberlake (WATCH)

Marine Cpl. Kelsey De Santis famously invited Justin Timberlake to attend the Marine Corps Ball with her via a YouTube video -- and the singer even more famously accepted and, finally, delivered last weekend by attending the dance. Now De Santis is whetting the fantasies of girls everywhere by offering a few glimpses into what it was like to have one of the world's biggest pop stars as her date.

"It was wonderful. It was a really good experience. He had a big smile on his face and so did I," the 23-year-old told Ann Curry on the "Today Show" Tuesday morning. Blonde hair slicked back and dressed in uniform, the combat instructor appeared at times shy yet exhilarated by the experience -- especially about the dancing bits.

"The whole thing was about bringing sexy back. It was a good time. We were on the dance floor and having a good time at the table joking and laughing. It was altogether really great," De Santis told Curry.

Timberlake posted a picture of the Saturday night ball, held in Richmond, VA., on his blog the following day, calling it "one of the most moving evenings I've ever had" and thanking his date for being "my hero." De Santis replied that she was "most honored" by his note and that "it was a great piece of writing."

As for any advice she might have for Sgt. Scott Moore, the marine who asked Timberlake's "Friends With Benefits" co-star Mila Kunis to be his plus one to the Marine Corps ball taking place this Friday (she accepted), De Santis laughed. "I don't think he needs it, with the video he came out with, I'm confident he'll have a great time like I did," she said.