AHH, THE LIFE . . . LUNCHING AND SHOPPING

LADIES WHO LUNCH:

Courteney Cox and Jennifer Aniston diet like STARS! The slim cuties skipped dessert after lunch at the swell-egant Polo Lounge in the BevHills Hotel, stopped by the jewelry shop -- Asprey & Garrard's of London, official jewelers to the Queen, dahlings! -- and treated themselves to nearly identical $750,000 diamond rings! (Wow! They each blew ONE week's salary!)