The red and white flower-print skirt was short, loosely fitted and made of light, flowing fabric and hence it easily flew up, reported Ace Showbiz.
Despite the embarrassing snapshot, Witherspoon just laughed it off.
Recently, the 'Walk the Line' actress was charged with disorderly conduct after she got caught in a verbal tussle with the police officer who was arresting her husband Jim Toth for driving under the influence of alcohol.
The couple was in Atlanta to shoot the film 'The Good Lie' and was pulled over in the early morning of April 19 when the cop noticed their car was in the wrong lane.