Carrie Underwood felt the love of her fans as she shared a celebratory photograph of herself with her friend and colleague, Jason Aldean.MORE: Carrie Underwood reveals surprising details of her home life with husband Mike FisherThe country superstar posted a picture of the two happily posing from the inside of a recording studio as they marked a big achievement.Carrie revealed that their recent collaboration, If I Didn't Love You had just hit number one at country radio.WATCH: Carrie Underwood