Patti LaBelle has revealed the secret behind her decades-long friendship with fellow R&B legend Gladys Knight. The 77-year-old who shared a Verzuz stage with the “Midnight Train to Georgia” singer in 2020 said she and her BFF get along so well because they allow each other to shine. That sentiment extends to their other bestie, Dionne Warwick, who joined them on Instagram in September as they belted out a medley of their collective hits.