The video was filmed at this year's event, featuring also pictures of her attending the annual music festival as a baby with her father.
In the beginning of the video, Allen, 29, recalled how her family spent time at the summer festival during her childhood and the time she met her husband Sam Cooper while she was playing at the festival. She showed off some memory pictures of her as both attendee and performer.
"Glastonbury has always been a huge part of my life, and I wanted to make this video there to celebrate the spirit of the festival and also to show how my life has changed since the last time I played there," she said.
"From being there as a child with my dad, to my wilder days in the 2000s, to this year when I was back on the Pyramid stage, and taking my husband and own daughters along!," she added.