WHEN COUGARS POUNCE DEPT.: Scrap those rumors that MILF-in-chief SHARON STONE split with 27-year-old Argentinean toybeau MARTIN MICA.

The 54-year-old sexpot and her model man were all but mauling each other at Neiman Marcus in BevHills, shopping hand-in-hand as Sharon treated him to a pricey bling-a-ding bracelet, plus a thousand buck$$ worth of designer duds.

The dazzly duo then visited the store’s trendy bar, where they sipped champagne, kissed and cuddled.

An acquaintance who spotted the star gasped: “Wow! I’d just heard you guys were broken up!”

To which Sharon shot back, “Does it LOOK like we’re broken up?” She proved her point by giving in to her…er, Basic Instincts, planting a big wet one on her glowing guy’s lips!