Lulu had "so much fun" playing Glastonbury.
The 'Shout' hitmaker performed at the iconic music festival last summer and is still stunned by the great response she received from the crowd.
She said: "As I went on stage at Glastonbury, the roar from the crowd was deafening.
"I was very surprised as I didn't really know what to expect. It was just fantastic and I had so much fun.
"My younger brother Billy is a musician and he told me that all the angels were looking down on me because the sound was perfect, the lighting good and the crowd was fabulous."
And the 67-year-old singer has an extra special souvenir at home to always remind her of the occasion.
She told Britain's HELLO! magazine: "My daughter-in-law Alana took the best picture afterwards, of my son Jordan and I laughing backstage, and she made me a mug as a present for my birthday with the photo on it.
"On the back, it says, 'My mother just rocked Glasto'.
"I never drink out of a mug normally - I'm old-fashioned and like a cup and saucer - but I drink out of that mug every day now. I love it."