EXCLUSIVE PHOTOS - Miley Cyrus Goes For A Spin In Her New Porsche

Another day, another ride? She goes through cars faster than Russell Brand goes through girlfriends!

Yesterday afternoon Miley Cyrus and her BFF Cheyne were snapped going for a drive in her new black Porsche Cayenne, and the starlet covered up her short blonde locks under a black hat. Miley turns 20 in just 9 days, so from the party to the outfit, we're curious as to what she has planned for her birthday...

On Tuesday she tweeted, "this week is gonna be a good one," and she later posted a photo of her adorable English Bulldog and wrote, "THE BIRFFFDAY B*TCH! (literally)." Awww!