Brier has played the role of Marcie Walsh on ABC soap opera One Life to Live since 2002. In 2004 her performance earned here a nomination for a Daytime Emmy Award for "Outstanding Supporting Actress in a Drama Series". "One Life to Live" marks her first major television role.
Brier began acting in the theatre, with regional credits that include Fanny Brice in "Funny Girl," Libby Tucker in "I Oughta Be in Pictures," Joy in "Cinderella", and Rizzo In "Grease." Her Off-Broadway credits include Ron Taylor and Mayor Maggie in "Bat Boy The Musical" at Union Square Theatre, "The Prince and the Pauper" at The Lamb's Theatre, "O'Casey Knock" at The John Houseman Theatre, and "Tango Ballad" at The Actor's Studio.
She is a graduate of Wagner College.