How to Fake Slim in Seconds

For abs that look better in a bikini (whether you've got a two-pack or a sixer), try this quick trick from Maria Verel, a makeup artist in New York City: Dribble long-wear foundation two shades darker than your skin tone onto a damp makeup sponge. Tense your stomach, trace the outline of your abs, then blend the edges.

More of a one-piece gal? Stick with a halter style; it shows off shoulders, distracts from fleshier areas and is just plain sexy.

Video: Look 10 pounds thinner by dinner >

Smear a stripe of iridescent lid primer or shimmer cream over your entire collarbone, says Verel. The area will stand out more, so your neck will seem longer and then (ideally) people will start mistaking you for Gisele.

Also, add a line down the center of arms and legs, blending outward. You'll draw eyes to bony areas and detract from not-so-toned spots. Upper-arm jiggle? What jiggle? Didn't notice!

Video: Make your face look thinner >

Some women named Olivia Wilde are born with an ultra-defined jaw; the rest of us can thank the makeup gods for contouring. "It makes anyone's jawline look more crisp and angular," says Anthea King, a New York City makeup artist.

Pick a bronzer with subtle, ultrafine shimmer one shade darker than your skin—you're going for a natural look. Brush along your jawbone, from your chin toward your ears.

Video: 2-Minute Makeup: Contouring the Nose >

Full brows are not only a big trend; they can make your face appear more svelte, King says. Lining up where the hair starts with the sides of your nose helps draw attention toward the center of your face to narrow it.

If your brows are naturally full, pluck excess hairs in the inner corners. If you need to fill out bare spots, use a sharp brow pencil. (Storing it in the fridge makes drawing fine lines easier.) Apply in tiny, upward strokes, then blend with a toothbrush.

Video: Make your face look thinner >

Hair swept to one side is particularly pretty on roundish faces. When it drapes over your eye, it helps minimize the chub in cheeks.

Dyeing your hair: much quicker than boot camp. Try framing your face with highlights, suggests Rita Hazan, colorist and owner of Rita Hazan Salon in New York City. Darker strands can cast shadows and emphasize fullness at the chin; sunnier ones diffuse light and make you generally golden.

Video: How to highlight your own hair >

Nail polish won't exactly make you Biggest Loser material, but it can help arms and legs look longer and leaner. Choose a sparkly skin-tone shade—it has the same sleekifying effect as nude sandals (for the cost of a bottle of polish).

If you're not up for a mani, file nails into an almond shape instead, says Patricia Yankee, a celeb manicurist in New York City. This strategy can also elongate fingers and steer eyes away from flab. But don't cancel your gym membership.