Thanks to The National Concert Hall (@NCH_Music) and Audrey Phelan (@audreyphelan365) we have identified the two competitors in this photograph as Dearbhla Collins(left) and Dearbhile O'Donnell(right). Another great response.
The photograph shows Dearbhla and Dearbhile at the first GPA Dublin International Piano Competition at the National Concert Hall in May 1988. The competition was won by Philippe Cassard of France. The photograph was taken by Mary Lee.
The Dublin International Piano Competition was established in 1988 as a triennial event and now ranks as one of the most important piano competitions in the world.