In reply to KAREN.

Rihanna = 117M Equivalence (2005)
Beyonce = 152M Equivalence (1997)

Rihanna= 31.5M PURE SALES (2005)
Beyonce = 80M PURE SALES (1997)

Rihanna Biggest seller GGGB (RE-RELEASED) 24.4M.
Beyonce Biggest seller IASF (No rerelease)
21.5M.