It's Britney, bitch. The lady Spears shimmied along in 1998, following in the syncopated dancesteps of Janet and Madonna to become a pop culture icon in her own right. Like those enterprising queens, Brit employed a series of reinventions throughout her career and suffered a few bumps along the way, but she's back and still churning out the hits nearly 15 years later. Let's take a tour of Britney Spears' greatest -- and most questionable -- video looks.