Pratt was a student at the Hampstead Dance Academy, and after graduation began her career at the Broadway Dance Center.[2] She has guest starred on such series as CSI: Crime Scene Investigation Season 1 Episode 22: Evaluation Day & Season 6 Episode 19: Spellbound as Anna Leah, ER, House Season 2 Episode 14: *** Kills as Amy Errington, Bones Season 2 Episode 5:The Truth In The Lye as Chloe, Veronica Mars, Law and Order: Special Victims Unit, Nip/Tuck, 7th Heaven, That 70's Show, and Sabrina, the Teenage Witch. In 2006 she appeared in **** episodes of the ABC show Brothers & Sisters, as an intern to Calista Flockhart and Josh Hopkins's characters.[3] Pratt, who was born in Concord, New Hampshire, graduated from Pinkerton Academy in Derry. She was Miss New Hampshire **** USA 1994 and competed in the Miss **** USA 1994 pageant. In July 2008, Pratt was cast as Kristy in the 2009 film I Hope They Serve Beer In Hell.[4] On July 25, 2010, it was revealed in the press room of Comic Con, that Pratt will be playing Cat Grant in the 10th season of Smallville