You might have a different opinion, but these 7 summer fashion trends are officially considered "outdated," as per fashion insiders.

      As an advocate of a well-curated capsule wardrobe, I don't place much importance on the term "dated" in the context of fashion. My colleagues and I at Who What Wear UK believe that once you've made smart investments in your wardrobe, the items you possess can stand the test of fashion's ever-evolving trends. However, it can be beneficial to make a few swaps now and then to keep your essentials feeling fresh and appealing.

      With nostalgia significantly influencing current trends, many once-considered "dated" styles are resurfacing in our fashion inspiration. From the iconic Isabel Marant Beckett Wedge of the 2010s to '60s-style capri pants and even Y2K jelly sandals, these items are making a comeback among the fashion elite in anticipation of summer. So, what does this mean for trends in 2026? The answer is straightforward. After reviewing the spring/summer runways and fashionable social media feeds, the trends they are embracing are reminiscent of summers gone by. Think of vibrant cornflower blue replacing butter yellow and dainty florals giving way to classic polka dots. Curious about what else is worth noting and what's worth adding to your wardrobe? I've compiled a list of seven trends that fashion insiders are opting for over "dated" styles this summer.

      1. Swapping: Butter Yellow for Cornflower Blue

       - Style Notes: Following the vibrant turquoise satin that surfaced this spring, cornflower blue has become the favored shade in 2026. This serene and elegant hue beautifully complements understated neutrals and comes in everything from silky satin dresses to playful wedge flip-flops.

       Shop Cornflower Blue:

       - Reformation Danica Knit Dress

       - M&S Wedge Flatform Flip Flops

       - GABRIELA HEARST Shiva Gathered Cotton-Poplin Maxi Skirt

       - Self-Portrait Floral-Appliqué Satin Minidress in Blue

       - With Nothing Underneath The Boyfriend

      2. Swapping: Waistcoats for Peplum Tops

       - Style Notes: A few years ago, I would have firmly said "no" to the peplum top making a return, but as we approach summer 2026, this structured design is back in style. Garnering support from celebrities like Millie Bobby Brown, Taylor Swift, and Elsa Hosk, its polished appearance makes it an excellent substitute for the fitted waistcoats we've cherished.

       Shop Peplum Tops:

       - Hobbs Bowes Ribbed Knitted Peplum Top

       - Ganni Peplum Blouse in Shibori Organza

       - Autograph Lace Collared Waisted Shirt

       - LIBEROWE Lavinia Cotton-Poplin Blouse

       - Róhe Peplum Wool and Silk Top in Black

      3. Swapping: Oval Sunglasses for '70s Specs

       - Style Notes: A bold summer style is taking shape, as evidenced by the upcoming sunglasses trends. Channeling the oversized shades favored by Twiggy, Jane Birkin, and Jackie Kennedy-Onassis in the '60s and '70s, it's no surprise that Chloé is leading the charge once again. With their inherent retro vibe, these glasses are the ideal finishing touch for the flowing blouses and balloon pants trending this season.

       Shop '70s Sunnies:

       - CELINE Disc Sunglasses in Acetate

       - Tom Ford Annabelle Sunglasses

       - Chloé Squared-Frame Acetate Sunglasses

       - & Other Stories Oversized Oval Frame Sunglasses

      4. Swapping: Silk for Taffeta

       - Style Notes: While satin trousers are always stylish, consider taffeta for a seasonal update. This lightweight weave offers the polished sheen we love about satin, with added structure. Often available in vibrant colors, fashion enthusiasts are choosing this material for dresses and skirts to provide the same outfit-enhancing effect with a fresh take.

       Shop Taffeta:

       - Topshop Taffeta A Line Longline Short

       - M&S Taffeta Midi Circle Skirt

       - Karen Millen Forever Twill Woven Prom Maxi Skirt

       - STAUD Sofia Strapless Bow-Detailed Taffeta Mini Dress

      5. Swapping: Floral Dresses for Polka Dots

       - Style Notes: As polka-dot dresses transition from trend to capsule-wardrobe essential, they offer continued charm. Capturing the perfect blend of timeless elegance and playful spirit, this ‘80s print—loved by figures like Princess Diana and Kate Middleton—has found a new lease on life. Available in fabric options like linen and satin, each version retains its sophistication with an easygoing vibe.

       Shop Polka-Dot Dresses:

       - Rixo Tally Silk Mini Dress

       - Reformation Frances