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 or feather embellishments. At the same time, ’90s-inspired 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 as 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, and 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, or 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 their most sought after maxi dress right now.
Reformation
Noe Silk Dress
Wait until you see the back of the dress.
Nordstrom shoppers note that this style runs true to size.
Style Notes: Cobalt blue embellished gown + Black mini tote bag
Tove
Helena Cutout Crepe-Satin Maxi Dress
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.
Valentino
Flowerism Sunflowers Jacquard Dress
This summer, style it with open-toe heels and then in the fall pair it with knee-high boots.
Style Notes: Cobalt blue embellished gown + Metallic heels
FAITHFULL
Bianca Cotton-Blend Maxi Dress
Wear this for a casual beach wedding.
Guaranteed to get you a lot of compliments.
Alex Perry
Strapless Ruched Jersey Gown
Explore More:
