Scott Disick and New GF

Scott Disick took his new girlfriend across state lines ... from New York to Florida.
Scott and 18-year-old Lindsay Vrckovnik were having fun in the sun in Miami Friday, showing skin, nuzzling and soaking in the sights.  Lindsay's got some nasty bruises on her legs.
They spent a day or so in NYC the day before, where Scott showed Lindsay around.
Kourtney who?