(Photo by Frederick M. Brown/Getty Images Entertainment)

Yesterday morning, [lastfm link_type="artist_info"]Rihanna[/lastfm] premiered a brand-new remix of her controversial hit “S&M” featuring [lastfm link_type="artist_info"]Britney Spears[/lastfm]. The track debuted less than 24 hours after RiRi teased her Twitter followers that she had “a sexy collabo comin’ your way super-duper soon… It’s Britney, b****!”