Kim Kardashian Deigns to Speak to Tara Reid

Tara Reid has come a long way since 2006 -- when Kim Kardashian famously left her in the dust outside a hot Hollywood nightclub -- in fact, just last night, Tara actually exchanged WORDS with the reality TV queen.

It's a video from the annals of TMZ history -- a young and nubile Kim Kardashian walking arm-in-arm with Paris Hilton into Hyde nightclub in 2006 ... breezing straight past Tara Reid, who'd been forced to wait in line.

But last night in Cannes (on Diddy's yacht) -- we're told Kim actually acknowledged Tara's existence, even speaking to the "American Pie" actress for several full minutes.

And to bring it all full circle -- Paris Hilton was there too!!! But we're told Kim didn't spend much time with her.

So we gotta ask ...