Rumors are already flying that Scott Disick is ALREADY cheating on Kourtney Kardashian with… this chick.  Whoever the hell she is.

She’s just left on a book tour (Really?  The Kardashian sisters “wrote” a book?  Justin Bieber’s book has got to be more interesting.) and paparazzi snapped photos of Scott with another woman in his Rolls Royce Convertible, driving around LA.

Scott looks douchey, guilty and tried as hard as he could not to be photographed with this unidentified, alleged home-wrecker.

Fame Pictures