Overmyer was born in Little Rock, Arkansas, in 1984; her father was serving in the United States Air Force and was stationed there. Overmyer and her family eventually moved back to Indiana, where she grew up in Camden, Indiana and attended Delphi Community High School in Delphi, Indiana. She received a nursing degree from Ivy Tech Community College, and is a health-care specialist dealing predominantly in respiratory issues.
The American Idol judges have often compared her sound to Janis Joplin. Overmyer was eliminated on the March 19, 2008 episode of American Idol, putting her in 11th place and just missing out on the tour along with David Hernandez.