This Dress Trend Plus Closed-Toe Flats in This Color Is *the* Outfit of Summer 2026

OSTN Staff

There are few things chicer than an Elsa Hosk outfit. Any fashion editor can confirm. She often combines multiple of-the-moment trends into one outfit and does so in the most effortless of ways. The latest summer trends she combined made for an easy outfit I highly recommend copying.

For starters, the summer 2026 dress trend Hosk wore was a sleep dress. In case you’re wondering why, exactly, people are wearing sleep dresses outside, let me explain. It’s basically a term given to loose-fitting, unstructured summer dresses with pretty, vintage-inspired details such as ruffled trims, bows, and eyelets. If you were to actually sleep in a dress, this style would be a good one to do so in. They’re often white (as Hosk’s was) but certainly don’t need to be.

With her puff-sleeve sleep dress, Hosk wore the closed-toe shoe trend (sorry, sandals) I want to make sure is on your radar: bright blue flats. It may seem a bit specific, but ocean-adjacent shades such as aquamarine and cerulean are a major colour theme this summer, and flat shoes are one of the forms in which people are embracing it.

Scroll on to see Hosk’s sleep-dress-and-blue-flats outfit for yourself (along with another recent occasion in which she wore the sleep-dress trend), and shop similar styles for yourself.

Shop Elsa Hosk’s Exact Sleep Dress Outfit:

Elsa Hosk wearing a white sleep dress with a raffia bag and blue ballet flats

(Image credit: @hoskelsa)

On Elsa Hosk: Sandy Liang Daikon Dress (£322); Saint Laurent Panier Medium Bag in Raffia Tote Bag (£1595); Chanel shoes

Another Elsa Hosk Sleep-Dress Outfit

Elsa Hosk wearing a white sleep dress and flip-flops with a tan baseball cap

(Image credit: GuessWhoISaw/Backgrid)

On Elsa Hosk: Helsa Midi Dress With Lace in Tech Poplin (£137); Polo Ralph Lauren Logo Cotton Twill Ball Cap (£94)

Shop Sleep Dresses:

Shop Blue Ballet Flats