It all went down in Arizona ... during a weekend in which RiRi went barhopping in Scottsdale.
What more could a girl want?
UPDATE: The tiny dancer is "Bridget the Midget," a porn star who also appeared on "Cathouse."
Wanna party with Justin Bieber ... you gotta sign on the dotted line! We got our hands on the contract JB makes all his guests sign ... and it seems outrageous and totally douchey -- but maybe it isn't. We'll explain.Plus, Lil Scrappy dodges jail time by claiming he's…
Are you ready for this? Because if you're not, get ready for this -- Fishwrapper is ready to live…READ MORE