In the movie "Shallow Hal," actress Gweneth Paltrow, a slim woman in real life, wore foam prosthetics to convincingly play an obese character. Model and talk show host Tyra Banks wore similar make-up to conduct a social experiment regarding the treatment of overweight women in society. If you want to appear fat for amusement, theatrical or scientific purposes, you can purchase your own foam prosthetics from special effects artist supply companies and make-up stores.
Wash your face thoroughly with soap and water to remove oils and promote prosthetic adhesion. Allow your face to dry before proceeding.
Place the prosthetic over your face to determine the placement. Remove the prosthetic and coat the back of the mask and the target area of your face with spirit gum, latex adhesive or prosthetic adhesive. Wait for the adhesive to become tacky.
Place the prosthetic in its proper position and press down to adhere it to the face.
Paint the edges of the prosthetic with liquid latex to create a smooth transition from prosthetic to face.
Dip a make-up sponge in grease paint that matches your skin tone or the skin tone of your desired character. Completely coat your face and the prosthetic foam with the grease paint. If desired, highlight raised areas with a slightly lighter paint.
Cover the make-up with finishing powder to seal it and create a matt appearance.
Put a fat suit on over your underwear and cover it with clothing in a large enough size to completely cover the fat suit. If you'd rather not buy or rent an expensive fat suit, put on a baggy outfit and stuff fabric or pillows inside to achieve a fat appearance.
Remove make-up with cold cream, and use an adhesive remover to remove the prosthetic adhesive.
Store the prosthetic in a cool, dry, dark area.
Foam prosthetics can last for four or more uses with proper care. You can use mineral-oil-based cream make-up instead of grease paint. If you do so, seal the prosthetic with castor-oil-based sealer before applying cream make-up, since the make-up contains mineral oils that can warp and dissolve latex. Only use one make-up type -- either grease paint or cream.
Avoid using mineral-oil based products directly on your mask, since they may cause the latex to dissolve or warp.