The 38-year-old British actress and her husband Ned Rocknroll were at the Prix de Diane Longines 2014 in Chantilly, France, on Sunday looking seriously stylish and completely loved up.
Kate wore a low-key monochrome Narciso Rodriguez dress with a pillbox-style fascinator by Philip Treacy paired with black Chloe Gosselin shoes, while Ned went for a navy suit and a smart pair of brogues.
The hat? It worked perfectly with her face shape, hair colour and skin tone - key things to consider when buying and styling fancy headgear.
It looks like the happy couple got totally into the races too. When they weren't hand in hand viewing from their box, Kate and Ned were up all cheers and smiles.
LIKE KATE'S LOOK? Take a click through this gallery to see the Brit beauty's fabulous wardrobe ensembles - think classic, understated and completely effortless.
And if you love racing attire, don't miss all the fashion from Royal Ascot which kicks off on Tuesday 17 June. If the hats are anything as fabulous as last year, it's sure to be another brilliant style spectacle.