In the Musidora Stakes, a trial race for The Oaks, Madam Gay reversed the Newmarket form with Fairy Footsteps but was beaten four lengths into second place by the Irish filly Condessa.
[6] Madam Gay was still without a win in seven starts when she was sent to France to contest the Group 1 Prix de Diane (French Oaks) over 2100 metres at Chantilly Racecourse eight days later.
Ridden by Lester Piggott she started at odd of 9/1 in a field which included April Run, Val d'Erica ( winner of the Oaks d'Italia), Tootens (Prix Saint Alary) and Ukraine Girl (Poule d'Essai des Pouliches).
She sprinted past her opponents,[7] went clear of the field and won by four lengths from Val d'Erica in a race record time of 2:06.5 despite being eased down in the closing stages.
Madam Gay was then matched against colts and older horses in the Eclipse Stakes on 4 July over ten furlongs at Sandown Park Racecourse where she finished fifth of the eight runners behind Master Willie.
She was ridden by Greville Starkey and started a 40/1 outsider in a field which included Shergar (the 2/5 favourite), Master Willie, Light Cavalry and Pelerin (Hardwicke Stakes).
[5] On 30 August, Madam Gay represented Britain in the inaugural running of the Arlington Million, then the world's most valuable horse race, after her owners paid a supplementary entry fee of $35,000.
On her final racecourse appearance, Madam Gay produced one of her few poor efforts as she finished tenth behind Vayrann in the Champion Stakes at Newmarket on 17 October.