Blue Ivy Carter was the ultimate older sister during her mom Beyoncé 's record-breaking Cowboy Carter tour, where she helped usher her younger sister, Rumi , into the spotlight in April. Blue Ivy and Rumi's grandmother, Tina Knowles , opened up about their close bond during an interview on Sherri on Monday, and revealed that Rumi couldn't wait to take to the stage with her famous family. "Listen, Rumi has been asking for the last three or four years, 'I'm ready, Mama, I'm ready!'" Tina recalled.

"And her mom was like, 'Well, this is a song where you can come out and be yourself on,'" she added, referring to Rumi's appearance during "Protector" in the show's third act. "And listen, she would come out, and the first night, she was so excited. People were making all these craz

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