Medium or tan skin tones like Kate Beckinsale don't need to look for nudes with a pink hue -- instead, try a beige color with slight hints of peach.
Shades like Sonia Kashuk Satin Luxe Lip Color in Barely Nude, $9.99, or MAC Lipstick in Myth, $16, are flattering options.
If you have a warm skin tone that tans easily, or are of Hispanic descent, nude lips like Jennifer Lopez's will be most flattering.
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.