Senior Debut: v Connacht, 2018, Thomond Park

Senior Interprovincial Caps: 16

Club: Blackrock College RFC

Breen made her Ireland debut as a 19-year-old against France during the 2019 Six Nations and she has since earned 31 caps for her country.

Breen played a key role for Munster in the 2026/27 Interpros, switching between out-half and inside centre as Munster secured a second title in as many years.