The question that follows choosing a dress is what to do with your face. The answer is simpler than it seems, because one principle covers nearly every case: decide whether the dress or your makeup is the focal point, and do not push both at once.
The one rule to remember
If the dress is a strong colour or heavily detailed — lace, embroidery, sequins — keep makeup natural and pick a single feature to emphasise. If the dress is plain and quiet in colour, you have room to go bolder, with a strong lip or a defined eye.
What usually looks unbalanced is emphasising everything simultaneously: a vivid red dress, a vivid red lip and a smoky eye. All three compete for attention.
Colour by colour
Red
A red dress already commands attention, so shift focus to the eyes with browns or soft golds, and keep lips in a pinkish nude or muted brick. If you truly want a red lip, match it as closely as you can to the dress — two reds a shade apart clash visibly.
Black
Black is the most permissive: it carries a red lip, a nude lip or a dark eye equally well. For something sharper, go red or berry; for something softer, use peach or light pink and take blush a little stronger, since black near the face drains a bit of colour from your skin.
Pastels and nudes
Soft dresses do not compete, so this is your chance to let makeup carry more. Rose or coral-pink lips keep the whole look fresh. The one thing to avoid is a very pale nude lip with a nude dress — together they wash you out and blend your face into the fabric.
Blue and green
Both are cool tones and sit well with cool pinks and berries, with a mid-brown eye as a safe default. Sage green and dusty blue are the exception: they pair especially nicely with warm makeup, like peach and copper.
Gold and silver
Metallic dresses need calm makeup, because the fabric is already reflecting light. Choose a satin skin finish, a brown eye and a nude lip, and let the dress do the work. Heavy highlighter with a shimmering dress reads as excessively shiny in photos.
Your skin tone matters more than the dress
Before matching anything to fabric, know whether your skin is warm or cool toned. The quickest check is the veins at your wrist in natural light: greenish means warm, purple or blue means cool.
Warm skin takes orange, coral and brick reds well; cool skin suits blue-pinks, berries and blue-based reds. Getting this right matters more than matching the dress, because a shade that fights your undertone makes you look tired no matter how good the dress is.
Test it before the day
If you rent and receive the dress in advance, do one full run-through with real makeup and photograph it. You will see immediately whether the pairing you imagined actually works, with time left to adjust.