This mystery country singer is still as sweet today as she was when this photo was taken during her high school years in the early 2000s. Until recently, she'd kept a similar haircut, and she's always had one of the prettiest smiles in Nashville.

The singer exploded into country music at the age of 22, and has quickly became known as one of the top female vocalists in the genre. She alternates between heart-wrenching story songs and playful or angry uptempo rockers that spell out revenge with a baseball bat.

Are you still stuck? Here's two more clues: She's a newlywed and an animal lover. Click the link below to find out if your guess is right and to see more celebrity yearbook photos.