The singer, 24, was honoured with Best Actress In A Musical for her critically-acclaimed performance in Evita and was visibly emotional as she accepted her award at the Royal Albert Hall.
The actress, 43, who welcomed her first child with the hunky artist in 2024, and is nominated for Best Actress in A Play, stunned in a striking silver gown.
The County Kerry-born actress, 36, lead a record-breaking night for female winners as she took home Best Actress for her work in Hamnet at the event held at the Dolby Theatre in Los Angeles.
Jessie Buckley shared the name of her daughter for the first time while accepting the award for Best Actress at the Oscars on Sunday evening in Los Angeles.
The Best Actress hopeful, 36, has been the toast of this year's awards season after earning critical acclaim for her role in Hamnet, where she plays a grief-stricken mother, Agnes.
The Irish actress, 36, scooped the gong for Best Actress for her role in Chloe Zhao's Hamnet during this year's star-studded ceremony at the Royal Festival Hall.
One Battle After Another proved to be the big winner with six gongs, while Jessie Buckley won Best Actress, and Robert Aramayo earned a surprise honour for Best Actor for I Swear.
One was Ariana Grandewho was not named for her role in Wicked: For Good in the Best Supporting Actress category. Her co-star Cynthia Erivowas also not included for Best Actress.