Diamond Necklace preserved her flawless record with a dominant win in the French 1000 Guineas at Longchamp. Aidan O'Brien’s 4‑5 favourite broke away from the rail after a sharp rise, leaving rivals Narissa and the field’s front‑liners far behind.

The filly’s first start of the season saw Ryan Moore sit patient until the gap opened, then push her to a finish that matched her flawless four‑win tally. O'Brien praised the filly’s natural ability, noting her pedigree and the smooth handling of the very soft ground.

With the Guineas secured, Diamond Necklace’s campaign now opens to the Prix de Diane and possibly the Oaks, depending on the owners’ plans. Her victory confirms O’Brien’s stable is still a force in Europe’s top juvenile races.