The longevity
Jan. 30, 1999
Almost two months after her 17th birthday, Britney Spears notched her first Billboard Hot 100 No. 1, as her introductory smash, "...Baby One More Time," reached the pinnacle. She's since upped her total to five Hot 100 No. 1s (most recently in 2011 with "Hold It Against Me"), as well as six No. 1 albums on the Billboard 200.
Got to give a kudos to Britney, Beyonce, Xtina, JLO for their longevity.
Not everyone has 6 #1 albums and 5 #1 hits
Girls aren't even close to 10 years of a career nowadays...and the future remains to be seen