ET's TOP 5: RiRi's Most Scandalous Shots

Photo: Instagram
Anyone who's ever so much as glanced at Rihanna's Instagram knows that the 25-year-old pop star isn't afraid to flash a little skin.
From topless to bottomless, this S&M singer has shared (and bared) it all through the years, and now we're counting down her five most scandalous shots.
What do you think of Rihanna's scantily-clad pics: sexy or inappropriate?