KHLOE KARDASHIAN I PARTIED WITH JUSTIN BIEBER … At Diddy’s Bash!!!

A resurfaced clip from “Keeping Up With The Kardashians” is raising eyebrows … with Khloe Kardashian spilling the tea about attending one of Diddy’s notorious parties, casually name-dropping that Justin Bieber was also in the mix.

In the clip from 2014, Khloe told sister Kourtney, “I got on a plane at 5:30 AM. Well, this party … I think half the people there were butt-naked … You would have loved it!”

When Kourtney asked who was with her, Khloe casually rattled off the guest list … mentioning she was with a bunch of pals — Diddy, Quincy, and Bieber, who was 20 at the time.