Tanya Chisholm (born July 1, 1984) is an American actress and dancer. She is mostly known for her role as Kelly Wainwright on the Nickelodeon sitcom, Big Time Rush. She is also known for her role as Marcie on the Legally Blonde spin off, Legally Blondes, (otherwise known as Legally Blonde 3), acting alongside Camilla Rosso and Rebecca Rosso. She has guest-starred shows such as, Cory in the House, Ghost Whisperer, and Cold Case. She also had a recurring role on Veronica Mars.