May 14, 2008 - LOS ANGELES — Another Britney Spears fender-bender, another instant online video.

Paparazzi had cameras rolling when the pop star's white Mercedes-Benz coupe rear-ended a red Ford Explorer Tuesday in Beverly Hills.

The video, posted on TMZ.com, shows Spears in the driver's seat. Wearing a ponytail and aviator shades, she covers her mouth with her hand after realizing she hit the car in…