With Nothing Underneath's Linen Shirt Is Summer's #1 Cult Buy

With nothing underneath shirt — (Image credit: @monikh @smythsisters)

If there's one item that earns its place in your wardrobe the moment temperatures rise, it's a linen shirt. Thrown over a bikini on holiday, paired with matching linen trousers, denim shorts or even worn loose over a dress, it's the quiet hero of every chic summer wardrobe. The only challenge? Finding one that's cut right. Luckily, With Nothing Underneath's cult Boyfriend Shirt does exactly that.

Marianne wearing linen shirt and shorts — *Martha wearing* *The Boyfriend Shirt in Blue.*

Spend five minutes scrolling Instagram, wandering through the elegant streets of London, Barcelona or New York, or simply looking around any fashion editor-filled office, and you'll spot it. Relaxed but not oversized, the Boyfriend Shirt has become one of those rare pieces that stylish women return to summer after summer.

Crafted from 100% linen, it's light, breathable and designed to get better with every wear. The fit is intentionally easy without feeling oversized, striking that elusive balance between undone and polished. Then there are the colours: elegant white, classic black, vibrant red and timeless pinstripes, each one chic in its own right.

Shop WNU Linen Shirt

With Nothing Underneath

The Boyfriend: Linen, White

Chic, effortless and endlessly versatile, it's the kind of wardrobe staple you'll wear on repeat every summer.

With Nothing Underneath

The Boyfriend: Linen, Black

There's something so sleek about a black linen shirt.

With Nothing Underneath

The Boyfriend: Linen, Cornflower Blue

Nothing says summer quite like a blue shirt.

With Nothing Underneath

The Boyfriend: Linen, Navy Blue

Deep navy is just so rich-looking.

With Nothing Underneath

The Boyfriend: Linen, Mocha and Black Multi Stripe

Throw it over swimwear, style it with linen trousers or wear it half-tucked into denim.

With Nothing Underneath

The Boyfriend: Linen, Sky Blue Stripe

Just add white trousers and sandals for an instantly chic outfit.

With Nothing Underneath

The Boyfriend: Linen, Lapis Blue

The vibrant blue shade feels distinctly Mediterranean.

With Nothing Underneath

The Boyfriend: Linen, Grapefruit Pink

Playful yet polished, this vibrant pink hue is guaranteed to brighten up even the simplest summer wardrobe.

With Nothing Underneath

The Boyfriend: Linen, Cardinal Red

Bold, in the best of ways.

Shop More WNU Buys

With Nothing Underneath

Sloane Dress: Linen, Red

A linen dress is the backbone of any great summer wardrobe.

With Nothing Underneath

Sóller Shirt: Fine Poplin, Cobalt Blue X Lucy Williams

The colour is everything.

With Nothing Underneath

The Weekend: Seersucker, Pink and Berry Stripe

The ultimate holiday shirt.

With Nothing Underneath

Sifnos Trousers: Fine Poplin, White X Lucy Williams

The cult summer trousers fashion people can't stop wearing.

With Nothing Underneath

The Set: Seersucker Navy Blue Shirt & Boxer Shorts

There's nothing easier than a matching set for summer.

With Nothing Underneath

Andros Dress: Fine Poplin, White X Lucy Williams

So effortless.

Marina Avraam is Senior Shopping Editor at Who What Wear UK, where she expertly navigates Zara, H&M, Toteme and Net-a-Porter (to name but a few) on a daily basis to unearth the most worthwhile pieces, while valiantly resisting the urge to add every single one to her basket. At Who What Wear, Marina is committed to curating a shopping experience that feels both aspirational and intentional, guiding readers to items—both affordable and investment—that will genuinely benefit their wardrobes.