Munn's further auditions led to small roles in Hollywood productions; most notably in the drama White Oleander opposite Alison Lohman, Michelle Pfeiffer, Robin Wright-Penn and Renee Zellweger, based on the Janet Fitch novel of the same name, and in Cameron Crowe's romantic tragicomedy Elizabethtown opposite Orlando Bloom and Kirsten Dunst.
In 2014, Munn began co-starring opposite Brian Stepanek as Anne Harper, the mother of the titular quadruplets in Nickelodeon sitcom Nicky, Ricky, Dicky & Dawn.