No royal woman's outfit is complete without the perfect accessories — and Kate Middleton has been giving us major hat inspiration ever since she joined the royal family.
Middleton usually chooses to let her hats do the talking, opting for muted colors with intricate designs by milliners such as Jane Taylor. However, the Duchess of Cambridge is known to switch it up every now and then with bold colors and a fresh new designer.
In celebration of January's National Hat Day and Middleton's 36th birthday on January 9, here's a look at some of the Duchess' most stylish hats over the years.
One of Middleton's earliest headpieces was this black and brown feathered fascinator by Vivien Sheriff Millinery she wore in February 2011.

She wore the subtle look a few months before she married Prince William in April 2011.
In June 2011, two months after the royal wedding, Middleton stepped out wearing this beige fascinator with a swirled ribbon detail.

It's a classic example of Middleton's penchant for subtle, refined accessories.
Middleton wore this slightly larger than usual black hat designed by Sylvia Fletcher for Lock & Co. in June 2011.

The hat featured a wide, inverted brim and a circular feather detail in the center.
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