Justin Bieber Gets Special Delivery 🎁 at Hotel, a $500k Lamborghini 🚗

Justin Bieber's seeing red, but in this case it's a very good thing ... he got a brand new luxury whip dropped off at his luxury hotel.

JB's special delivery went down Friday at the Montage resort in Laguna Beach, CA, when a flatbed truck arrived with a brand new, custom Lamborghini Aventador ... with a price tag likely well over $500,000.

We're told the Biebs took some video and admired the flashy red sports car for a bit -- as did all the passersby -- before hopping in and taking the 730 horsepower ride for a test drive.