McLaren maxi dress car Paris Hilton sunglasses

Princess P is really building quite the collection of sports cars!

Paris Hilton drove her brand new black McLaren to Barneys in Beverly Hills for a shopping spree on Wednesday, and the heiress brought her dog along for the fun!

We spotted the blonde beauty checking out the pricey vehicle at a dealership back in January, and then we caught her yesterday driving off the lot with it! Just in case you were wondering, her ride typically costs anywhere between $300K-$400K!

The 33-year-old socialite looked absolutely stunning in a blue printed wrap dress and was even nice enough to flash us a huge grin!

We wonder if she's ever going to let boyfriend River Viiperi take it for a spin?!