Looks like Daisy Duke's been packing on the pounds.

Appearing at a concert over the weekend Jessica Simpson unveiled a serious curvier look and may have indulged in some hardcore holiday over eating and drinking.

The 28 year-old singer who's still snugglin' NFL-er BF Tony Romo belted out a string of country hits during a "Chili Cook-off" event, hosted by a Pembroke Pines, Florida radio station.

Let's hope she laid off the nominated entries…

At least, we think it's food and not the P-word.