updated 07/29/2014 AT 2:00 PM ET
•originally published 07/29/2014 AT 7:15 PM ET
“When I grow up I want to be a mommy and a doctor.”
That is how 5-year-old Zahara, who suffers from sickle cell anemia, answered the classic question, “What do you want to be when you grow up?” She was asked as the subject of a video for the world’s largest nonprofit blood marrow donor center – Delete Blood Cancer.
“Zahara is a beautiful girl, she’s very brave and intelligent,” says model Georgia May Jagger in the video.
Jagger, 22, who is the daughter of Mick Jagger and model Jerry Hall, serves as ambassador to Delete Blood Cancer for Coty, a beauty products manufacturer.
Little Zahara touched my heart,” Jagger tells PEOPLE. “She deserves to live a long and beautiful life. As the Coty global ambassador for the fight against blood cancer, it is my mission to help Zahara find a match. I am a registered donor with Delete Blood Cancer and I hope everyone will take a few minutes to register today.”
Finding a match is proving to be difficult for Zahara. Most patients require shared ancestry with their donors, and a mere seven percent of registered donors are African-American. (July is African-American Bone Marrow Awareness Month.)
“A bone marrow transplant is really the only way to ensure that she lives a long healthy life,” says Zahara’s mother, Keisha Lucas. “She got a chance to meet Georgia May Jagger and she just fit in, sat on her lap, had a good conversation – it was just really nice to see that she’s backing up this effort. People like Georgia May have a voice and an ability to reach people that I’d never be able to reach.”
Jagger also makes appearances at events to benefit the organization.
“From the heart of a mother, who wants to hear the doctors tell you your daughter may not live to be as old as you are?” says Lucas. “I’m always two seconds away from a teardrop.”
Jagger wants people to know that getting tested to be a donor is easy. Test results from a cheek swab are sent to a national bone marrow registry, and if the marrow is a match, donors undergo a minor outpatient surgery to extract healthy stem cells that will replace the patient’s unhealthy cells.
“If I could help someone like little Zahara and give her a bone marrow transplant, I would, in a second,” Jagger says.
To register, visit Delete Blood Cancer DKMS.