Katarina Leigh Waters (November 10, 1980) is a German-born English professional wrestler and valet. She is best known for her time in World Wrestling Entertainment and Total Nonstop Action Wrestling. During her time in WWE, she performed on its Raw brand under the ring name Katie Lea and performed under the ring name Winter, while working in TNA. Prior to signing with WWE, she spent many years on the independent circuit, particularly in the Frontier Wrestling Alliance, where she used the ring name Nikita.