Dua Lipa revealed why she missed out on performing with Elton John at his Glastonbury headlining set this year.Fans of both Lipa and Sir Elton were speculating that she would be one of his special guests on stage due to their Number one hit ‘Cold Heart’. Though the ‘Rocketman’ singer did host a star-studded lineup during his performance, Lipa was not one of them. To the fans’ disappointment, Sir Elton still played the track with Lipa’s voice as backing vocals.In a since-deleted Instagram story post, Lipa shared that she was hosting a dinner with her friends and family during the Glastonbury set.