This week, a mega heatwave has hit the UK and if you're anything like us, you're probably struggling to figure out what to wear right now.

Finding something that will keep you cool but still looking stylish in the hot sun can be a tricky task but it seems there's one new M&S dress that could help you do just that.

The high street brand is often our go-to when it comes to summer dresses, so it's no surprise that we are eyeing up its latest release to see us through the heatwave.

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Priced at just £45, the maxi shirt dress is ideal for everything from work to the weekend. It can be dressed up or down and features a chic red and beige print, colours that ensure this dress will see you through to the autumn months too.

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M&S maxi shirt dress
Marks & Spencer

BUY NOW Pure Cotton Printed Tiered Shirt Maxi Dress, £45

The brand posted a snap of the maxi on Instagram and it seems the new dress has divided opinions among shoppers online.

While some fashion fans can't get enough of the stylish maxi, others question how comfortable the long sleeves will be in the summer sun.

The dress is made from eco-conscious sustainably scoured cotton so should keep you cool despite the high collar and long sleeves.

Shop more of our favourite dresses for the heatwave

Cotton Blend Floral Square Neck Midi Dress
M&S Cotton Blend Floral Square Neck Midi Dress
Credit: M&S

With its on-trend square neckline, mid-length sleeves and pretty floral design, this is a dress you'll want to wear all summer long - and into the autumn.

Kate Midi Shirt Dress
Kate Midi Shirt Dress
Now 15% Off
Credit: Boden

This midi dress is simple but effective, as it can also be worn in a smarter work settings, too.

Summer Dress
Summer Dress
Now 36% Off
Credit: Crew

Who doesn't love a classic floral design? Wear this pop of colour to stand out everywhere this summer.

Khaki Midi Shirt Dress
Khaki Midi Shirt Dress
Credit: River Island

A khaki midi shirt dress will never go out of style. Pair this one with your favourite sandals or heeled wedges to complete the look.

Lilac Smock-Topped Dress
Lilac Smock-Topped Dress
Credit: H&M

Less is more with this dress. The subtle details like gathered bodice paired with the flared sleeves makes the dress an understated staple for the current season.

Laura Pique Tie Strap Tiered Midi Dress - Hot Pink
Laura Pique Tie Strap Tiered Midi Dress - Hot Pink
Credit: Pour Moi

Why not opt for the colour of the moment, with this bold pink number?

Jersey Printed Square Neck Midi Dress
Jersey Printed Square Neck Midi Dress
Credit: M&S

Elegant and chic, we love the design of this dress. Long sleeves and a tie detail on the square neckline makes for a stylish outfit.

Viviana Twist-Front Pleated Midi Dress, £100
Viviana Twist-Front Pleated Midi Dress, £100
Credit: Forever New

A stunning occasion-wear option, this dress has an eye-catching leopard print and also features delicate pleats, a wrap design and stylish mid-length sleeves.

Pink Cassidy Eliza Dress, £129
Pink Cassidy Eliza Dress, £129
Credit: Never Fully Dressed

Made from viscose, this gorgeous red, and pink dress is a beautiful addition to your summer wardrobe. Wear this to your next garden soirée or brunch with the girls to really glow.

Printed Midi Dress, Zara
Printed Midi Dress, Zara
Credit: Zara

Made from breathable cotton, with a round neck and short sleeves, this dress from Zara is designed with the summer in mind.