20s: Hot Pink Cheeks
Pink blush like Leighton Meester's looks lively and feminine — perfect for spring. "In your 20s you can get away with a very bright shade," says Tayaba Jafri, Laura Mercier Global Makeup Artist. To avoid a clownish effect, use a fluffy brush to apply the color just to the apples of your cheeks and be sure to blend.
MAC Powder Blush in Full Fuchsia, $18.50, maccosmetics.com
20s: Matte Skin
After several seasons of dewy skin, it's fun to try out a more polished, matte effect, and youthful skin is the perfect canvas, says Jafri. To get Kim Kardashian's flawless look, use a powder like Bare Escentuals bareMinerals SPF 15 Matte Foundation.
30s: Statement Lips
Ruby-hued lips dominated the red carpet during awards season (check out the look on Diane Kruger), but it's not the only eye-catching shade out there. "Plum and berry colors are great options too," says Jafri.
30s: Dramatic Liner
For a sexy night-out look like the one Ginnifer Goodwin has here, rim your upper and lower lash lines. Skip liquid versions, which can be tricky to work with, and use a long-lasting cream version instead. A good one: Laura Mercier Caviar Eye Liner.
40s: Metallic Eye Shadow
Switch it up from the usual matte charcoal shadow shades and choose a shimmering gold or bronze hue for Cate Blanchett's dazzling look.
Urban Decay Smoke Out Kit in Deep Greens, $34, urbandecay.com
40s: Strong Brows
Not only are full, defined brows like Salma Hayek's on trend right now, but they also have an anti-aging effect on your face, says Jafri. For easy at-home shaping, try the Christi Harris Precision Brow Planing System.
50s: Plump Lips
Nothing makes you look younger than volume, especially when it's in your lips. To score a fuller mouth sans needles, try a plumping lip gloss in a soft berry or plum shade. A good one: Lorac Lotsa Lip Plumping Lip Gloss in Naughty.
50s: Glowing Skin
Mineral makeup can help your complexion appear more youthful and radiant. For healthy, luminous skin like Michelle Pfeiffer's, use a hydrating product like Physicians Formula Healthy Wear SPF 50 Tinted Moisturizer.