Rihanna 'dumps' Drake, BFFs again with Katy Perry? Chris Brown's ex parties with Robert Pattinson's 'fling' at NYC nightclub [PHOTOS]

Rumors suggest that Rihanna recently "dumped" Drake, but she gained a BFF back in the process!

Several insiders insist that RiRi's blossoming relationship with Drizzy is doing just fine, although the Nothing Was the Same crooner is somewhat of a big flirt...

But who needs boy drama when you have awesome gal pals?

The Barbadian beauty was spotted partying with "frenemy" Katy Perry at a popular NYC nightclub over the weekend. The pop starlets both celebrated Walshy Fire's birthday at the infamous 1Oak, and they looked to be having a blast together!

Of course, RiRi's spotted with a blunt at one point:

Check out more party photos on Facebook.

Apparently, the "Dark Horse" songstress never approved of Rihanna's troubled relationship with Chris Brown, which caused a major rift in their friendship. But now that RiRi's officially moved-on (with fellow rapper Drake), the girls seem to be back on good terms! Can't wait to see what trouble these two might get into together!

Oh - rumors also suggest that Perry recently hooked-up with Robert Pattinson, so doesn't look like she'll be buddying-up to Kristen Stewart again anytime soon...