'Vanderpump Rules' Jax Taylor - Arrested for Felony Theft ... Over Hawaiian Sunglasses

Jax Taylor from "Vanderpump Rules" took a break from the beach Friday night for an extended visit to a Honolulu jail, after getting busted for allegedly stealing a very expensive pair of shades.

Law enforcement sources tell us, Jax is still in the slammer with no immediate prospect of getting out. We're told he allegedly went to a sunglasses shop and stole a pair. He was arrested at his hotel a block away.

The glasses had to be worth more than $300 ... the minimum in Hawaii for charging someone with felony theft.

Jax has been posting pics of his vacation with GF Brittany Cartwright.

They'll be able to add another pic to the set ... the one taken by cops.