How to dress for the Prix de Diane Longines?

The Prix de Diane Longines isn’t just one of the most prestigious horse races in France—it’s also a celebration of fashion, elegance, and tradition. Held annually at the historic Chantilly Racecourse each June, this glamorous event combines high-level equestrian sport with a unique and refined dress code. So, what should you wear to the Prix de Diane Longines to look your best and fit in with the crowd? Here’s our advice.

What is the Prix de Diane Longines?

Founded in 1843, the Prix de Diane Longines is a prestigious Group 1 flat horse race reserved for 3-year-old fillies. The race covers a distance of 2,100 meters and is a major highlight in the French racing calendar. But beyond the sport, it’s the festive ambiance and sartorial elegance that truly set this event apart.
Fashion plays a central role at the Prix de Diane, with attendees treating the day as an opportunity to showcase sophisticated, daring, and elegant outfits. A standout look is not just welcomed—it’s expected.

What should you wear as a man?

Dressing for the racecourse is one thing, but dressing for the Prix de Diane Longines is another. This is true for the women, but also for the men, who have to make an effort to dress appropriately.
If you can’t find the inspiration to create your outfit, here are our recommendations to make sure you don’t get it wrong and stick to the Prix de Diane Longines dress code:

The suit: opt for a light-coloured suit suited to this type of event. As it takes place in June, linen or cold wool will be perfect.Shirt: Shirts are, of course, a must for such an event. Choose a cotton or linen shirt in a soft colour like sky blue, pale pink or white, of course.
A skinny tie or bow tie : add a refined look to the ensemble.
A hat : a great accessory, along with a panama or a straw hat, to match the spirit of the event.
Shoes: opt for chic models such as richelieus, derbies or leather loafers.
Accessories: you can add a suit pocket, watch or sunglasses.

Don’t hesitate to take a look at the photos of previous editions to get a better idea of the type of look you can find on site. If there’s one event where you can be daring, it’s the Prix de Diane Longines.

What should you wear when you're a woman?

For the women, elegance is also the order of the day, and the hat becomes a key part of the look. In fact, the dress code for the Prix de Diane Longines invites women to opt for a flashy and original hat, which is what makes this race so special. Your hat for the Prix de Diane Longines should therefore be very chic or original. In addition, a certain dress code must be respected to complement the hat:

Dress or trousers: the choice is yours. If you opt for a dress, wear it long or midi length for a chic look. When it comes to colours and patterns, spring is often a great inspiration, with floral motifs and light, pastel colours. When it comes to fabrics, opt for linen, cotton or tulle.
Jewellery: choose fine, discreet items such as pearls in your ears or a pretty, slender watch.
The bag: here too, elegance is the order of the day with an evening bag or clutch.
Shoes: complete the look with a pretty pair of pumps or elegant sandals.

How to dress for the Prix de Diane Longines?