While the Princess of Wales is renowned for her impeccable fashion and elegant royal wardrobe, rarely is her one constant accessory given its due and discussed and dissected as much as her clothing. The item in question? Her lovely and ladylike collection of headwear.
From frilly fascinators to sculpted saucers, the future Queen consort has amassed a large collection of hats over the years. Of significant note is her cocktail hats and pillbox styles from Irish haute couture milliner Philip Treacy.
Based in London, Treacy is acclaimed for his artistic hat designs and has become of the most sought after milliner’s in the world. Winner of the British Accessory Designer of the Year award five times, his designs are unique with superbly crafted pieces defined by feminine flourishes like curling petals, rotating ribbons and oversized blossoms.
Treacy is considered one of the world’s leading haute couture hatmakers and is regularly awarded for his ready-to-wear hats and handbags.
The Princess of Wales loves wearing Philip Treacy for glamorous royal occasions from garden parties to weddings to annual events like Trooping the Colour.
Kate’s substantial collection of Treacy’s derby and party hats has only grown in size and scope over the years.
Here are 18 Times Kate Middleton Wowed in a Philip Treacy Hat:
1. Philip Treacy Saturn Dome Hat in Black and White
Accented with a striking pointy black feather, this large brim hat hailing from Philip Treacy’s Spring/Summer 24 collection is noteworthy for its retro style. Princess Kate has worn the hat just once thus far and sported it in June 2024 for the annual Trooping the Colour parade.
2. Philip Treacy Preacher Hat in Blue Satin
Distinguished by its teardrop silhouette, this luxurious fascinator boasts a tonal blue satin feather and unique twist knot detail. The princess has worn the accessory just once for the National Service of Thanksgiving in 2023.
3. Philip Treacy Rosette Hat in Red with Sculpted Ribbons
Kate debuted this striking saucer hat at Royal Ascot in June 2023. Crafted from sinamay straw, the custom creation features a rosette arrangement and sculpted ribbons.
4. Philip Treacy Black Saucer Hat with Black Polka Dot Feathers
A bespoke design, this whimsical wide brim hat features plentiful polka dot feathers and a large wide brim. Kate has worn the hat just one time for the Order of the Garter Day service at Windsor Castle in the summer of 2023.
5. Philip Treacy Wide Brim Hat with Bow in Green
Crafted from delicate sinamay straw, this striking headpiece features a tonal green satin bow with a decorative enamel button. Coordinating flawlessly with Kate’s emerald Andrew Gn embellished dress, this is one of Kate’s most intriguing Treacy hats. The princess has worn the hat just one time for Trooping the Colour in June 2023.
6. Philip Treacy Dark Green Hat with Braided Ribbon
Capturing the spirit of country western design, this sophisticated hat is distinguished by its felt wide brim accented with a thick Chinese braided gimp trim ribbon and quill. Kate donned the classic wide fedora for Christmas Day with the royal family in 2022.
7. Philip Treacy Black Wide Brim Hat with Chinese Ribbon
A design originating from the styles seen in Treacy’s Autumn/Winter 2020 collection, this sophisticated wide brim hat features intersecting Chinese braided trim ribbons at the back. Worn for the National Service of Remembrance in 2022, the memorable hat is perfect for stoic and solemn occasions.
8. Philip Treacy Rosette and Ribbon Saucer Hat in Pale Yellow
This regal rosette trimmed hat is one of Kate’s favorite designs with its layered florals and tonal silk ribbons. Kate owns a very similar Gina Foster Potato chip hat in yellow which she wore to a family wedding in July 2011. The princess has opted for this particular soft yellow saucer hat just once in June 2022 for the Queen’s Platinum Jubilee Service of Thanksgiving.
9. Philip Treacy Saturn Dome Hat in Navy and White
Worn recently for the naming ceremony of the HMS Glasgow, this elegant hat hailing from Philip Treacy’s Spring/Summer 2022 collection, is equally captivating and charming. Designed with a colorblock aesthetic, the derby hat features contrasting navy and white sinamay overlayed on a dome silhouette.
10. Philip Treacy Rosette Slice Hat in Mint
Perfect for elegant royal occasions, Kate has worn this pretty hat on a single occasion. The princess donned this Treacy number with its woven stiffened sinamay fabric and oversized rosette flower with layered petals for a garden party in May 2022 at Buckingham Palace.
11. Philip Treacy Rosette Slice Hat in Natural
One of Princess Kate’s most repeated Treacy designs, this feminine fascinator has a slice silhouette and is constructed of natural sinamay with overlapping yellow rosettes. Worn on three occasions — for Harry and Meghan’s wedding in 2018, Trooping the Colour in 2019 and most recently for a palace garden party in May 2025 — this neutral hued hat is a fixture in Kate’s sunny spring accessories.
12. Philip Treacy Pheasant Feather Fedora in Brown Felt
Less pomp and pageantry, this fedora is perfect for countryside jaunts and less formal royal outings. A felt fedora defined by a wide wraparound pheasant feather, this topper is one of Kate’s preferred styles for off-duty royal occasions. The princess has worn this hat just once for Christmas Church service in 2021.
13. Philip Treacy Black Bow Fascinator
A hat perfect for solemn occasions, this piece is designed as a velvet beret with a large sculptural satin bow at the side. Kate has worn the cocktail hat on just one occasion for Remembrance Sunday in November 2020.
14. Philip Treacy Rosette Saucer Hat in Light Blue
Exemplifying Treacy’s aesthetic approach, the famed milliner is responsible for this iconic hat worn by the princess for Royal Ascot in 2019 and a garden party in May 2023. Boasting a delicate tonal rosette under the brim, this powder blue hat is one of Kate’s favorites for cheery spring and summer engagements.
15. Philip Treacy Rosette Sauce Hat in Soft Pink
Owned by the princess in pale pink as well as light blue, Kate served major style at Trooping the Colour in June 2016 in this ladylike hat by her beloved hatmaker.
16. Philip Treacy Big Bow Hat in Black Felt
Princess Kate’s most recycled Philip Treacy hat is this custom black felt piece with a tilted crown and upturned wide brim. Kate first wore the ‘Loopy Loop’ hat in 2006 at Prince William’s Sandhurst graduation. Defined by a large knotted tonal felt bow, this embellished wide brim hat has also been worn by Her Royal Highness for three remembrance Sundays including in November 2012, November 2017 and November 2023.
17. Philip Treacy Black Veil Cocktail Hat
A custom made cocktail hat with an attached mourning veil, this fascinator was seen on Kate for Prince Philip’s funeral in April 2021 and for Remembrance Sunday in 2019.
18. Philip Treacy Pink Hat with Veil
Worn to Princess Eugenie’s wedding, this raspberry pink beret has the signature Treacy floral detailing as well as boasting an alluring veil.
The princess was also spotted in what’s believed to be a Philip Treacy white saucer hat with flowers in Jamaica in March 2022.
