Jena Sims Koepka (born Jena Michelle Sims; December 30, 1988) is an American actress and model. She has appeared in made-for-TV films and B movies such as Attack of the 50 Foot Cheerleader (2012), 3-Headed Shark Attack (2015) and Sharknado 5: Global Swarming (2017). She was also named Miss Georgia Teen USA in 2007.