Rihanna Moving Up - Tied for 7th on All-Time Female Hot 100 #1's

One of the best measures of the size of Rihanna's success as a pop artist is that she is starting to make herself known on all-time measures of pop success. With the ascent to #1 on the Billboard Hot 100 this week of her collaboration with T.I., "Live Your Life," Rihanna finds herself in a tie for the #7 position among women for most #1's on the venerable chart. With 5 chart-toppers, she does have a long path ahead for the all-time crown, but she finds herself in good company. The standings with the number of #1's for each artist:

• Mariah Carey - 18
• Madonna - 12
• Whitney Houston - 11
• Janet Jackson - 10
• Diana Ross - 6
• Paula Abdul - 6
• Rihanna - 5
• Barbra Streisand - 5
• Olivia Newton-John - 5

And just for the record, Rihanna's #1's have been:

• 2006 - "S.O.S."
• 2007 - "Umbrella" featuring Jay-Z
• 2008 - "Take a Bow"
• 2008 - "Disturbia"
• 2008 - "Live Your Life" with T.I.

_{Photo by Kevin Winter / Getty Images}