Miley Cyrus doesn't turn 16 until November 23, but she's already bought herself a present �" a convertible

In late August, the star ordered a fully loaded white Mercedes-Benz CLK 550 Cabriolet with a sticker price of $75,375.

"Miley wanted special options like parking assist and a cream-colored leather interior, so she ordered the car early," her pal says.

When Miley scratches it up, she can replace it the same day. I guess it's good that she started off with a $75,000 car. With her budget, that's really cheap.

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