ET's Kevin Frazier spoke with Natasha, 15, and Ella, 11, backstage after Jennifer Lopez and Shakira dominated the Hard Rock Stadium field on Sunday. During the star-studded show -- which also included Bad Bunny and J Balvin -- J.Lo's 11-year-old daughter, Emme, let her powerful vocals shine as she joined her mom for a rendition of her song "Let's Get Loud" and Bruce Springsteen's "Born in the U.S.A."
"My favorite part was when the little girls came out and Emme sang, it was really good," Ella said of Emme's performance.
Natasha then gave her "stepsister" a cute shout-out. "It was the coolest thing to watch my stepsister sing. I'm so proud of her every time I see her and her voice is just angelic."
Adding, "My favorite part was whenever the beat dropped and the crowd just went crazy and the energy in the stadium was unreal."
As for how their soon-to-be stepmom was feeling after her dynamic and historic halftime show, Natasha replied, "Jennifer is over the moon…I'm so happy for her. She's so proud of herself and she should be."