Rihanna -- Banging Drake Again ... and She Really Wants You to Know It

Rihanna's antics at Tuesday night's Drake/Lil Wayne concert left little doubt ... she and Drake are banging again ... and she really, really wants people to know.

RiRi was front and center during the show and made quite a spectacle while Drake was on stage. You'd have to be blind to not spot her jamming in the crowd next to a few of Wayne's family members. Hasn't she ever heard of keeping things on the DL?

The concert wasn't the end of their night ... with sources telling us Drake and RiRi showed up to after parties at 1Oak and The Attic following the show. The flammable duo were both at a NYC nightclub Monday as well.