To check out the hottest trend in cos¬metic surgery, look down. Women are shortening toes, plumping up heels with collagen, and erasing signs of age with lasers, bleaches, and even lipo suctions all to fit their aching feet into towering stilettos and strappy sandals.
    "More and more women in their 40s and 50s want to put on pretty shoes, but bunions or hammertoes make it too painful-so they're opting for surgery," says Suzanne M. Levine, DPM, a Manhattan podiatrist who performs "foot facials" and cosmetic foot surgery.