Holly has held several successful solo exhibitions in Ireland and exhibited in many group exhibitions including the Royal Hibernian Academy, Dublin, the Royal Ulster Academy, Belfast, the Ulster Museum and the Kennedy Gallery. Her work has been collected by The National Trust,Trinity College, Dublin, and the Ulster Museum, among others.

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She is a Fellow of the Ballinglen Arts Foundation, Ballycastle, County Mayo, and a founding member of the Irish Society of Botanical Artists.

For some years she was based in the herbarium of the Botany Department of Trinity College, Dublin, and was commissioned to draw new illustrations for the 7th edition of David Webb’s ‘An Irish Flora’. She has done extensive botanically correct pen and ink drawings for researchers at Trinity College and other universities around the world. These drawings have been published as illustrations in papers for various scientific journals.

Holly lives and works in Enniskerry, County Wicklow, where she shares a gallery on the square in the village with sculptor David McGlynn and jeweller David Evans.