You can spot a bad blue dress from the other side of a room. The colour sits flat on the fabric, almost chalky under shop lighting, and the shape does nothing for the body inside it. A good one reads differently, the blue has depth to it, it moves with you rather than at you, and it looks like it was cut for a person rather than stamped out of a pattern.
If you own nothing blue yet, start with a mid tone, something between navy and cornflower, in a shape you already know suits you. This isn't the dress to experiment with an unfamiliar cut on, save that for a colour you're more used to wearing. A wrap style or a simple shift in a mid blue works on more occasions than a bright cobalt or a pale powder blue, which both read as event dresses rather than ones you can wear on a Tuesday. Over months, a well made blue dress should hold its colour through washing, not fade to grey at the shoulders or under the arms first, which is usually where you notice it going. Cold washes, inside out, away from direct sun on the line, that's really all it needs. A cheap one will often bleed in the first wash and never look the same blue again, which tells you everything about what was in the dye in the first place.
The difference between well made and disappointing shows up fast if you know where to look. Cheap blue dresses are usually a thin synthetic that catches the light wrong, almost shiny in a way that isn't flattering, and the seams pucker within a few wears because they weren't finished properly. A better one uses a fabric with some weight to it, cotton, viscose or a decent blend, so the dress hangs rather than clings, and the seams lie flat against the body instead of fighting it. Check the zip, actually run it up and down in the shop or before you take the tags off, because a sticky or flimsy zip is usually the first thing to go and the most annoying thing to live with. Buttons and linings matter too, a lined dress in a good fabric will outlast an unlined one in a cheap one by years, not months.
Blue is an easy colour to build around because so much already works against it. Tan or black accessories both sit well with it, a denim jacket works if the blues are different enough in tone, and plain white or neutral layers let the dress stay the focus without a fight.
Put one on with the shoes you already reach for most and the whole outfit looks finished without you doing anything else to it.
Picked by Zara Malik. More in Dresses.