6. Britney Spears
Sept. 22, 2008
Oct. 10, 2008. "Welcome to Britney Spears' Twitter! Follow the latest in Britney news and get updates straight from Britney and her entourage."
Note how Swift gives fans a little glimpse into her life with her first post while Spears keeps them at arm's length behind several layers of security. This is what a decade of pop stardom, paparazzi stalkers, publicized breakdowns and breakups and parenthood can do to a person. Get ready, Taylor.
Britney's released two albums since -- with 2008's
going platinum and last year's
selling 1 million copies in the U.S. -- and has had three No. 1 singles with
Hold It Against Me
. Like her fellow blonde 2000s Disney pop contemporary Christina Aguilera, though, Spears has settled in to life as a talent judge. Fox's
seems to agree with her and her Twitter numbers, even if her life isn't quite the tabloid fodder it was five years ago.