Like tan skin tones, nude lips with peach undertones work best. Try Rimmel London Moisture Renew Lipstick in Nude Delight, $4.99, or, for a peach with subtle shimmer, Hourglass Femme Nude Lip Stylo in No. 5, $30.

Skin tones that sit somewhere between olive and dark -- like Halle Berry's flawless complexion -- look best in flesh tones with a hint of rose.

Halle Berry tends to favor barely-there shades like Revlon Colorburst in Créme Brulee, $7.49, and Chanel Rouge Coco Shine in Satisfaction, $35.

People with deep complexions like Gabrielle Union should opt for nude lipsticks with copper undertones or a hint of mauve.

Maybelline Color Sensational Lip Color The Buffs is a collection of 10 shades dedicated to the nude trend. Try it in Sin-A-Mon, $7.49, for a mauve undertone, or for a lighter look, Nars Satin Lipstick in Honolulu Honey, $26, is a flesh-toned classic.