Justin Bieber: My Insta Hottie is Spotted

We're betting Justin Bieber's already had a close-up view of the birthmark in this pic -- can you spot it? It's okay if your eyes didn't go there first.

Model Sahara Ray's the chick the Biebs is cavorting with in Hawaii. Check out the pics ...the Aussie's fantastic curves are what dream vacations are made of ... if you're Justin.