[2] Munn followed her stage roles with small roles in White Oleander, the film adaptation of the Janet Fitch novel of the same name, opposite Alison Lohman, Michelle Pfeiffer, Robin Wright-Penn and Renée Zellweger, and in Cameron Crowe's romantic tragicomedy Elizabethtown opposite Orlando Bloom and Kirsten Dunst.
[3] In September 2003, Munn won a co-starring role opposite Amanda Bynes and Jennie Garth in the second season of The WB sitcom What I Like About You as Tina Haven, Holly Tyler's new best friend.
In 2009, Munn began a recurring role on The WB drama One Tree Hill playing Lauren, Jamie Scott's teacher who begins to date Skills Taylor at the end of the sixth season.
[5] From 2014 to 2018, Munn co-starred opposite Brian Stepanek as Anne Harper, the mother of the titular quadruplets in Nickelodeon sitcom Nicky, Ricky, Dicky & Dawn.
They became engaged in Paris in December 2006 and married on November 17, 2007, at the French Huguenot Church in Charleston, South Carolina.