Rose McGowan's Top Falls Off

6/27/2011 12:14 PM PDT BY TMZ STAFF
Rose McGowan was left feeling a little exposed earlier today -- after the roof of the car she was in suddenly FLEW OFF on a highway.

Rose tweeted the picture just hours ago, with the message, "Kind of ruined a perfectly good afternoon."

No kidding. As far as we know, no one got hurt.