Lindsay Lohan -- Oops, My Top's Down!

12/8/2010 10:50 AM PST

Lindsay Lohan -- Oops, My Top's Down!

Watch out world ... Lindsay Lohan is finally back behind the wheel of a car.

TMZ has obtained the first photos of Lindsay's big return to the driver's seat -- taken yesterday in Rancho Mirage, CA.

Sources close to LiLo tell us the car doesn't belong to her -- we're told she's using the BMW as a rental while the Mercedes her father gave her is being fixed up in the shop.

As we first reported, Betty Ford was reluctant to let Lindsay drive at all -- because they thought paparazzi would follow her ... creating a dangerous driving environment.

But now -- she's free to drive as much as she wants ... as long as she's sober.