The Scottish star’s appearance was a closely guarded secret until she took to the stage, joining the cast of West End musical Les Miserables for a live performance, duetting with X Factor star Lucie Jones on I Dreamed a Dream - the song that first made her famous.
Boyle was spotted in August last year, four months after her stroke, in a rare outing when she stopped to pose for photos with fans at the Knock House Hotel in County Mayo.
The star smiled for a photo with the hotel owner, who revealed she was a “fabulous lady”.
The owners later wrote on their Facebook page, “It was our pleasure to welcome Susan Boyle back to Knock House again recently. Susan is a fabulous lady and we always love to see her return time and time again to Knock House Hotel.”
It was the first time the star had been snapped in public in over a year.
