Education
Born in Ballsbridge, Dublin, Mulcahy was educated locally before being conferred with a Bachelor of Arts from University College Dublin. She subsequently attended University College Galway where she studied communications. She has also completed a marketing diploma.
Career
She began her broadcasting career in San Diego in the mid-1990s, where she worked on the Education Channel as a reporter and editor in a Columbia Broadcasting System affiliate. She returned to Ireland in 1999 where she joined TV3. She worked with the station"s news division and spent several years as entertainment reporter.
In 2007 Mulcahy joined TV3"s entertainment show Xposé as a reporter.
She spent two years with that programme before leaving in 2009 to co-present The Morning Show with Martin King.