For over two decades, the Billboard Music Awards has been one of the must-see music events of the calendar years, thanks to the biggest stars, best performances (like Britney Spears and Rihanna’s sexy “S&M” performance in 2011, left) and most did-you-see-that moments packed into each ceremony. Relive the storied history of the Billboard Music Awards by perusing its most memorable snapshots!


A young Britney Spears showed off impressive moves -- including a backflip -- during her performance of "...Baby One More Time," and "Crazy" at the 1999 show.


Britney Spears and then-husband Kevin Federline were mean-mugging with their dog on the red carpet at 2004's BBMAs.


no "Slave", tho
how dare they