Carrie Underwood is having a great time promoting her new album, Diamonds and Rhinestones, while in the UK.MORE: Carrie Underwood marks Fourth of July in bittersweet postThe award-winning singer appeared on Absolute Radio this week and chatted to host Baylen Leonard.In a preview of the interview - which will air on Monday - Carrie recalled a star-struck moment that left in freezing in surprise while at Glastonbury back in 2019.VIDEO: Carrie Underwood introduces two new family membersThe singer reminisced about her performance and meeting Janet Jackson.MORE: Carrie Underwood shares unexpected family photo with husband Mike FisherMORE: Carrie Underwood's 'freak' accident which left her needing 40 stitches in her faceShe said: "I have played a lot of festivals but this one is special.