The singer-and-actress was eating a meal with friends at the Beverley Hills Hotel Polo Lounge recently when a morsel of food accidentally flew off her fork and disappeared down her low-cut top, causing her to scream out in surprise.

The US star dug around to retrieve the food stuff, "ruffling up" her top in such a way that fellow diners in the restaurant were becoming so uncomfortable they had to look away.

A source told the National Enquirer magazine Jessica "not only dug down into her top, ruffling through bra and cleavage, she even tried burrowing out from beneath, wriggling and digging diligently for the lost tidbit."

When she finally gave up the hunt, the 29-year-old star joked: "Oh well... it'll pop up eventually!"

Despite her nearly X-rated display, Jessica previously complained when she accidentally saw an elderly man's private parts at the gym.

She wrote on her twitter page: "Dear elderly man at the gym: it's hard 4 me 2 keep composure whilst punching at chipmunk speed when ur ball sack spills out of ur wind shorts. (sic)"

Jessica Simpson almost exposed herself in a restaurant.