Justin Bieber was NOT straddling Kourtney Kardashian when he seemed to taunt Scott Disick.
Check out the pics … Justin posted the pic above on Instagram Sunday with the caption, “Lord knows.” Lots of people thought the chick in the pic was Kourtney.
Turns out … not at all. The pic below, which was taken around Newport Beach, shows the woman in question … and it’s not Kourtney. In case you have any doubt, check out her shoes.
BTW, as we reported, Justin and Kourtney hung out at his hotel between 1 and 4 AM Saturday, so there’s smoke, but the pic he posted is deceptive.

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-Tmz