Heredia will join Saturday’s Sun Chariot field, headed by multiple Group 1 winner Inspiral, after owners St Albans Bloodstock chose to pay the £20,000 fee to supplement her.
The four-year-old filly bounced back to her best on return to a mile in the Listed Dick Hern Stakes and followed up with a comfortable win in the Group 3 Atalanta Stakes at Sandown Park.
"She is certainly at the peak of her powers and her last two runs have been tremendous," said St Albans Bloodstock's racing manager Richard Brown.
"Andrew Stone [St Albans] is a real sportsman and he was very game to have a go. It's probably my fault she wasn't originally in there, but Andrew was very keen to have a go and she is going to take her chance on Saturday.
"Andrew is an owner-breeder and to have bred a filly of this calibre is what he aspires to. To come and have a run, and hopefully a live candidate, in a race like the Sun Chariot is what it is all about."
Heredia will take on John and Thady Gosden's Inspiral, who recorded back-to-back Group 1 Prix Jacques le Marois at Deauville in mid-August and the André Fabre-trained Mqse De Sevigne, who completed a French Group 1 double in the Prix Rothschild and Prix Jean Romanet.
Ireland will be represented by Aidan O'Brien's Meditate, the Paddy Twomey-trained Just Beautiful and Joseph O'Brien's Goldana. Coppice will join stablemate Inspiral from the Gosden yard whilst Ed Walker's Random Harvest and the Archie Watson-trained Roman Mist complete the line-up of nine.
