Known for playing cheerleader Claire Bennet on the NBC series "Heroes", she started dating Klitschko in 2009, but they called off the relationship in 2011 before reconciling earlier this year, reports contactmusic.com.
UsMagazine.com reports that the 23-year-old Nashville star and the Ukrainian champion are planning to cement their union with a summer wedding. A source told the website, "Very few people know, and she isn't wearing her ring publicly yet."
Kareena Kapoor Khan looks in fab shape after weight loss! See photos
Mumbai food: 9 dishes to try during 9 days of Navratri
Photos: Hrithik Roshan, Nidhhi Agerwal and Adah Sharma walk the ramp
Photos: Shah Rukh Khan spotted with new set of wheels
Photos: Kareena Kapoor Khan, Kangana Ranaut at the Mumbai airport