Katelyn Marie Tarver (born November 2, 1989) is an American singer, who is a native of Glennville, Georgia. She first made her singing debut on the singing competion spin-off of American Idol, American Juniors, which was a compition for kids 6-13 to compete for a spot in a 5 member group. Though Katelyn didn't make the group in 2003, about a year after she got a record deal, and it all went from there.[1] She is also well known for her part in t ... he hit nickolodeon show Big Time Rush, where she plays Kendall Knight's girlfriend, Jo Taylor.See more [+]