I'm a Fashion Editor, and I'm Convinced This Wedding Guest Dress Color Trend Is the New Butter Yellow
Sorry, butter-yellow dresses—the style set is choosing this elegant color for weddings instead.
Wedding season is officially underway, and with that, the wedding guest dress trends of 2026 are becoming clear. In terms of styles, we're seeing a lot of maximalist designs with floral and feather embellishments. At the same time, '90s-inspired and sleek slip dresses are dominating. When it comes to colors, there's a noticeable shift. Instead of butter yellow, the style set is favoring cobalt-blue dresses.
Cobalt-blue dresses have unexpectedly taken over the fashion scene in 2026, mirroring the sudden rise of butter-yellow dresses in 2025. What the style set loves about this shade is that it's bold but versatile. It works for all dressers and for a handful of wedding destinations—from Miami to NYC and Italy. Plus, the shade has that designer seal of approval, and it was spotted on tops, pants, dresses, and outerwear on the spring/summer 2026 runways. Think Akris, Meryll Rogge, and Versace.
Even if you have no weddings on your calendar, the cobalt-blue dress trend is worth noting. From Staud to Reformation, Valentino to Tove, every label has one to offer in a range of silhouettes. There are cute minis to wear on vacation in Ibiza, midis that can take you from the office to post-work drinks, and flowy maxis to throw over bikinis.
Since this story is about wedding guest dresses, though, I have curated an edit of the best cobalt-blue dresses you can wear to celebrate love this summer. Keep scrolling to check them out.
Lioness shared that this is its most sought-after maxi dress right now.
Wait until you see the back of the dress.
Nordstrom shoppers note that this style runs true to size.
Style Notes: Embellished cobalt-blue gown + Mini black tote bag
My dream wedding guest dress.
I can picture this dress at a wedding in Antibes or Cannes.
This dress is so flattering and chic that my friend just bought it in every color.
This summer, style it with open-toe heels, and in the fall, pair it with knee-high boots.
Style Notes: Embellished cobalt-blue gown + Metallic heels
Wear this for a casual beach wedding.
Guaranteed to get you a lot of compliments.
Gorgeous.
