4:48 PM PT -- As it turns out, Kylie wasn't the only one who happened to cross paths with an old flame -- Khloe's ex-husband, Lamar Odom, was ALSO in the same club around the same time that the KarJenners showed up. How 'bout that?!
We're told Lamar had arrived at Hyde well before Khloe and Kylie showed up around 1 AM, and left at about 2 AM or so with his own GF -- so nearly an hour of overlap. This one doesn't seem as fishy as Kylie and Tyga's run-in, but it's interesting nonetheless.