Chapman comes to LSU following a stint at UAB, where she was a unanimous selection to the Conference USA All-Freshman Team in 2007.
She redshirted in 2008 while competing with the Canadian U-20 national team at the U-20 Women's World Cup in Chile.
"I'm very excited to join the team here at LSU because it's a program that's definitely going in the right direction," Chapman said. "I have been given a great opportunity to play here, and we're all looking forward to a great season next fall. It looks like we'll have another strong team to play with, and hopefully I will be able to bring something to the team. I really think we have a chance to compete for an SEC championship. LSU has consistently been in the Top 25 the last couple of years and I don't think that will change."