BOSOM BUDDY: Hugh Grant turned bright red when a top-heavy femme fan ambushed him outside his LA hotel and pleaded, “Will you sign my breast?”

Blinking nervously, Hugh sputtered, “What? Are you sure?” She took out a Sharpie pen and told him: Absolutely. Still crimson, Hugh took the pen, autographed one of her bulging semi-bare boobs — and hightailed it to his waiting limo while the gal showed off the signature to anyone who’d look!