It's "ser-shuh" with an "er"
Not "sor-see" with an "or"
'Cuz "sor-see" with an "or" goes "or"
Not "er"
It's "sh" instead of "ss"
"Uh" instead of "ee"
Simple as can be
See? Saoirse!
Saoirse-ronan released How to Pronounce “Saoirse” on Sat Dec 02 2017.