YouTube sensations Sophia Brownlee, eight, and her cousin Rosie, five, from Essex, England, got the surprise of their lives during an appearance on the Ellen DeGeneres Show.
The pint-sized singers, dressed in their now famous pink ballerina outfits and tiaras, peformed Nicki Minaj's 'Super Bass' tune and met Nicki (video below).
Sophia squealed with delight as the pop star emerged from backstage. She immediately jumped into the singer's arms and threw her arms around her. Rosie, who dances while her older cousin sings, also gave her a hug.
Nicki joined her little fans for another rendition of the song, and the pop star said she was so impressed when she first saw the YouTube clip: "Within five seconds of seeing this video I was calling everyone. I was also receiving a billion emails. Everyone was like 'you have to see this little girl.' She blew me away. I have a hype man and you have a hype girl."
Nicki then told Sophia: "You are incredible. I just want you to stay in school. Music is beautiful, but stay in school ok. Put your books first and singing second."