red and blue striped dress Polo Collar Asymmetric Hem Cotton Midi Dress, Striped / XS wash red Rosemary, Short-Sleeve Shirtdress, Blue Stripe

XKCD did a nice example in The dresses are identical, the background makes all the difference

You don't need to whip out on a full tux, guests can dress in black trousers, a white shirt and a bow tie, with the bride to be in white

Sydney Sweeney at the Miu Miu Show at Paris Fashion Week Sydney Sweeney nailed the exposed-underwear trend in logo-clad briefs, a micro miniskirt, and a crop top at the Miu Miu show at Paris Fashion Week on October 3

Classic Formal Suit Remember: You don't have to wear a tuxedo for a black-tie-optional wedding

Overall, RIXOs mission is to design clothes that make people feel like the best version of themselves