Love It or Leave It?

Love it: I would rather spend more time applying foundation so that it looks like there’s none there, says Dubroff. Her tip: Prep skin with a primer to even out the texture and slightly mattify your T-zone. Then use a foundation brush starting from the T-zone and working outwards. If the skin on the side of your face is even and smooth, don't cover it—let it breathe.

Leave it: “My pet peeve is when there’s so much foundation you don’t see the skin anymore. (Is it just us or has Christina's foundation also seeped into her hairline?)

Love It: “A little pop of a bright color on the apple of the cheek looks great, according to Dubroff. Opt for a cream formula that's dewy—never sparkly.

Leave It: “Lots of contour cheek color isn't flattering, says Dubroff. All you see is makeup!”

Love It: Try color—turquoise, mandarin or violet—without being too trendy. Cream shadows are great for applying a sheer shade with sheen and shine. Remember to layer powder lightly on top to up the shadow's staying power.

Leave It: Dubroff says the traditional smoky eye trend doesn't translate well in photos. Heavy, overdone eyes can make even young women look older than they are.

Love It: Dubroff says a couple clean coats of black mascara are the way to go. If you want to amp it up, try a single strand of individual false lashes. I always use short ones so nothing looks flare-y.”

Leave It: A full strip of fake lashes is totally dated, says Dubroff. When people put on heavy lashes, it looks as if they can hardly open their eyes.”

Love It: “Brows should be well groomed, but natural, according to Dubroff, who will shade brows with a color that matches the lightest strand of hair on the head. Even if someone has very dark black hair, I'll use a dark brown pencil to take it down a notch.”

Leave It: Dubroff recommends avoiding brows that are overly sculpted and defined. They can look painted-on and too perfect.

Love It: “A nice sheer version of a bright color looks really fresh, says Dubroff. If the lips are nude-y, they should be a rose nude, not a pale nude, she notes.

Leave It: Good-bye, goop. Lip gloss shouldn't be wet and sticky-looking, says Dubroff. When I use it, I put a dot in the center and spread the color around the mouth so it's subtle.”