SCOTT DISICK HAD A ONE DAY THINGY WITH A MIAMI MODEL JESSICA HARIS - She Says...

 Scot Disick's Miami mystery girl is a hot model he casually met and "hung out" with for the day ... at least that's what she's telling friends.

The cheeky chick is Jessica Harris -- professionally known as J Lynne -- a Next model from Philly who recently moved to Florida. 

 SCOTT AND JESSICA

Seems like 'The Lord' just wanted some beach side strange.

TMZ