There are top hats – and then there are Lock's top hats. Shop Top Hats

O'Keeffe Hat

This vintage-inspired beauty cuts a glamorous and eye-catching silhouette.

An oversized straw braid hat that features handmade white silk flowers. Pair this with a figure-grazing pencil dress or tea dress to complete the look.

O'Keeffe Hat
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Due to the nature of Couture hats and the various different delicate materials we use to make them, it is best to contact us about specific care and cleaning questions.


The O'Keeffe Hat features handmade white silk flowers on an oversized straw braid hat.

This hat is available in 2 colours: black/white and natural/black.

Styling & Fitting

Pair this with a figure-grazing pencil dress or tea dress to complete the look.

Please allow 4 weeks for made-to-order fulfilment for this hat.

Please note that all couture pieces come with a complementary Lock & Co. hat box.

How to measure your hat size. Read More

Hat Size Chart

Women's Hat Styling

Every Lock & Co. hat purchased is carefully and expertly hand-prepared in our London shop by one of our Hatters, before being whisked out of our famous green front door.

If you would like to speak with one of our Stylists, please email us at or use our contact form and one of our team will contact you.


At Lock & Co., we sell the finest hats and caps. To achieve this, we pay particular attention to specific hat characteristics - style, fit, durability, and materials. We share these characteristics with you for each hat to help you decide on the perfect choice.

Find Your Size and Style

At Lock & Co. we offer a wide selection of styles of hats. What defines a hat style is its form: overall shape, height/shape of the crown, width of the brim, and material type. These define a style e.g., Fedora, Trilby, Panama, Cloche, Tweed cap etc.
Straw Braid
Lock & Co. hats are made of the finest quality material. These can range from exclusive Escorial wool, Scottish Tweed, and cashmere to Toquilla straw for our Panama hat.
Comb & Elastic
Every part of a hat has its purpose. Discover the features or aesthetic of each hat and how it will specifically enhance your hat-wearing experience.