In reply to Lax.

Rihanna is just the ninth artist to total at least 10 Hot 100 No. 1s and the fifth solo female, following Carey (18), Madonna (12), Whitney Houston (11) and Janet Jackson (10). (The Beatles lead all acts with 20 career No. 1s; Michael Jackson has the most (13) among solo males. In addition to the Supremes (12), Stevie Wonder (10) is the other act with at least 10 Hot 100 leaders).