
Rihanna arrives for a full run-through rehearsal at Radio City Music Hall in New York City on Thursday morning.
Tomorrow, the 20-year-old Barbadian beauty will join Carrie Underwood, Ashanti, Ciara, Fergie, Keyshia Cole, Leona Lewis, Mariah Carey, Mary J. Blige, Miley Cyrus, Natasha Bedingfield, and Sheryl Crow in a live performance of “Just Stand Up,” the unprecedented charity single in support of Stand Up To Cancer (SU2C).
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