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With warmer weather and blue skies here, now is the perfect time to refresh your spring wardrobe - and a hero shirt is a great place to start.

Championed by Catherine, Princess of Wales, and a host of familiar faces including This Morning presenter Cat Deeley, it's a versatile staple you'll find yourself reaching for on repeat.

Both Kate and Cat favour light blue styles, wearing them with everything from casual jeans to smart tailoring, proving just how adaptable they can be.

Below, I reveal the exact pieces loved by both women, how to style them, and - most importantly - where to shop them.

Catherine, Princess of Wales

Kate has chosen an oversized blue shirt from WNU (With Nothing Underneath) on two public occasions this year. 

She is clearly a fan of the British label, having worn the same design in white last September - which has since been worn by her sister-in-law, Meghan Markle. 

The brand's Boyfriend shirt is celebrated for its breezy shape and menswear-inspired detailing, fastening left over right in classic tailoring tradition.

It pairs seamlessly with everything from tailored shorts to a midi skirt, making it a year-round staple.

After visiting WNU's Belgravia flagship myself, I can vouch for its understated, effortless aesthetic and exceptional comfort.

Cat Deeley

Cat Deeley showcased her love for elevated classics in an M&S two-tone shirt, teamed with wide leg jeans, while presenting This Morning. 

I love how the contrast collar and cuffs offer a fresh take on a wardrobe staple. 

The oversized fit and longer length mean it can be worn loose or tucked into a range of bottoms, while the concealed button-through front creates a polished finish.

 It's the perfect blend of classic and contemporary - all for just £36.

Cat has also opted for a blue Boden cotton shirt, featuring a straight silhouette and curved hem. 

While the presenter styled hers with a velvet trouser suit for a glamorous look, it would work just as well for both casual and more formal occasions. 

Kate previously wore a very similar Boden shirt last year, which has since sold out - making this version a great option to snap up while it's still available.