Gossamer heads Coronation 12 Gossamer heads a field of 12 fillies to stand their ground at the final 48-hour declaration stage for the Coronation Stakes at Royal Ascot on Friday.Luca Cumani`s filly disappointed in the Sagitta 1000 Guineas but bounced right back to form with a runaway win in the Entenmann`s-sponsored Irish version at the Curragh.Among her rivals will be John Gosden`s Zenda.She was a surprise winner of the French 1000 Guineas but finished last of 15 behind Gossamer in Ireland.Gosden also saddles Pretty Polly Stakes second Disco Volante.A likely improver in the field for the Group One event is Dolores, from the in-form Amanda Perrett stable.The Danehill filly finished fourth in the Newmarket Classic on only second career start and confirmed that promise when following up in a Listed race at Goodwood next time.Aidan O`Brien, already among the winners this week, is represented by Alstemeria, Maryinsky and Sophisticat.Marcus Tregoning will be hoping Nell Gwyn Stakes winner Misterah can bounce back to form after finishing a slightly disappointing sixth at Newmarket, while John Hills` Newbury handicap winner Hideaway Heroine takes a big step up in class.The field for the Stg£250,000 event is completed by Paul d`Arcy`s Lady High Havens, John Dunlop`s Red Liason and the Clive Brittain-trained Shiny.