The short answer on Chartreuse Gown: pick one anchor piece, keep the palette to two colours, and let the shoes decide how formal the whole thing reads. One piece should lead and the rest should stay quiet; two competing pieces read as an accident. Proportion does more than colour: volume on top wants something narrow below, and the reverse. Check where the waist seam sits on the model against your own proportions. The groups below run from the decision that matters most to the ones you make afterwards.

What decides this is shoulder fit, length and how the fabric moves. Everything else is preference. Two from the first group show the range: Faherty's Seacoast Crochet Column Dress - Midnight Labyrinth at $194, and ALT Swim's Alexandria Dress - Bluebell at $193. The first is the considered buy; the second is the one to start with. Lining is what stops a cheap fabric reading as cheap. A dress that fits the shoulders can be taken in anywhere else. One that does not, cannot. A higher price mostly buys materials and finishing, and occasionally it buys nothing at all.

A belt turns a shapeless dress into a deliberate one. Let the dress be the loudest thing you own that day. From the second group, Faherty's Denim Michelle Short-Sleeve Jumpsuit - Cloudlight Wash ($114) is the one that earns its place, because it works in more than one context without being restyled. The third group is smaller and deliberately narrower, dresses, for the decisions you make after the main one. None of this needs the whole group. One piece from each is usually enough.

There are 20 dresses here from 12 brands, $40 to $395, all in stock when this was written. We would not buy all of them, and neither should you. Detoure's Skims - Black Bodycon Maxi Dress - M (Like-New) at $40 is the low-risk way in, and Leo Lin's Rosario Tweed Mini Dress - Houndstooth at $395 only makes sense if this is a category you already use constantly. On chartreuse gown specifically: the difference between the top and the bottom of this list is real but smaller than the price gap suggests. Nothing here is included because it is famous, and price is not used as a proxy for quality anywhere on this page. If you take one thing away: buy the one you can picture using this week, not the one you are saving for later.