Who is the singer in the 5 hour energy pink lemonade commercial?

While the girl in the video does resemble Leann Rimes, it is not her. The 5 hour energy (Pink Lemonade) commercial was actually a submission from a fan for the Pink Lemonade Launch contest that was being promoted. The owner of the video which is called "Girl and Guitar" received $7,500 dollars and all that is known is that their username was Andersen for the contest.

Her name is Allison Shiffler.