Holloway works mainly as an impressionist using oils, watercolours, pastel, pencil and oils on a variety of subject matter, including wildlife, landscape, maritime and portraiture. She originally studied at the Crawford College of Art, Cork but abandoned these studies when she was encouraged to become a model by photographer Ted McCarthy. However, her interest in painting was revived later on. She studied under Kay Doyle, President of the Watercolour Society of Ireland. This lead to a number of noted solo and collaborative art exhibitions.