MOUSEY MRS. MACCA Mills campaign
No shrinking violet, an increasingly reviled Heather Mills stepped out in London this weekend as part of an environmental campaign, encouraging people to switch from cow's milk to rat's milk to help avert a global warming catastrophe.

Wearing a green T-shirt with a vegan slogan, Mills drew a crowd of paparazzi as she aired her grievances at London' Speaker's Corner in Hyde Park, and suggested that drinking milk from rats, cats, and dogs would be more eco-friendly than dairy products from carbon-emitting livestock.

The PR move was pegged to the launch of a series of steamy posters, which proclaim that a vegan lifestyle can help save the planet, and feature a scantily clad Mills next to slogans like "You Haven't Got a Leg to Stand On!" and "Hey, Meaty, You're Making Me So Hot!"

But the charitable endeavor didn't win over all observers. As one tab sniped: She arrived in a "gas-guzzling 4X4 Mercedes." It's also unlikely to impress eco-chic Stella McCartney, who once famously snubbed Mills by offering her a paltry 10 percent discount off of her clothing and is said to be creating a one-legged charm necklace in honor of her evil stepmother.