Let the bidding begin! Red carpet gowns worn by a host of celebrities have gone up for sale on the internet and Jennifer Lopez was the first to donate a frock to the charity auction. The Latin diva made the generous gesture at a fundraising gala for Aids sufferers, which was also attended by Hollywood golden girl Scarlett Johansson.J Lo arrived arm-in-arm with fashion maestros Dolce and Gabbana in one of their exclusive designs - and promptly declared it for auction. She was the picture of lady-like elegance in the calf-length lacy dress, teamed with a pair of killer heels. Meanwhile Scarlett had selected a sequinned flesh-coloured gown.
