Dancing Rain will defend her title against nine rivals in the Qipco British Champions Fillies' And Mares' Stakes at Ascot on Saturday.
William Haggas' four-year-old has only run once since claiming the Group Two event 12 months ago.
After winning this race, she went on to finish unplaced in a Japanese Group One but then suffered an interrupted preparation which has prevented her from running so far this year.
Haggas also runs Vow, who will be ridden by Richard Hughes for the first time.
Great Heavens has been given the green light by John Gosden after her good run in the Arc.
The Irish Oaks winner finished sixth after being supplemented.
There are two French challengers. Andre Fabre's La Pomme D'Amour and Alain de Royer-Dupre's Jehannedarc.
Aidan O'Brien's Was, winner of the Oaks at Epsom in June, will aim to return to winning ways.
The Irish challenge will be supplemented by Dermot Weld's Sapphire.
Frankie Dettori will ride Testosterone for Ed Dunlop while Hughie Morrison's Shirocco Star would not be winning out of turn.
The field is completed by Clive Brittain's Semayyel who was supplemented after her 125-1 win in a Listed race at Yarmouth.
