HEATHER IS ON THE EDGE!

Bizarre public breakdown worries pals

HOLLYWOOD train wreck Heather Locklear looked to be off the rails again when the beautiful boozer was caught on camera acting downright bizarre in Malibu!

The former Melrose Place vixen, 61, was dropped off at a medical building by her fiancé, Chris Heisser, on the afternoon of June 29.

He waited for her in a nearby parking lot, but after she emerged, Heather totally ignored him and instead started talking to herself, sat on the steps reading a journal and even sprinted across the lot.

At one point, the troubled actress precariously walked along the edge of the building — risking a horrifying and dangerous fall — in her flip-flops, steadying herself by holding onto pillars.