So Mi Dar maintained her unbeaten record with an impressive victory in the Musidora Stakes at York.
John Gosden's filly had won the Derby Trial at Epsom on her previous start and that form had been boosted by the second and third last week.
The daughter of Dar Re Mi was sent off the odds-on favourite for the Musidora on her step up to Group 3 company and she swooped into the lead two furlongs out before quickening away stylishly.
As a result of So Mi Dar's success, Titanbet cut the filly into 11/4 from 5/1 to win the Oaks at Epsom next month.
A field of seven had gone to post for the Musidora, but no-one was keen to go on in the early stages before Best In The World tacked over to lead in the hands of Ryan Moore.
Frankie Dettori, meanwhile, settled So Mi Dar at the rear of the field as 1000 Guineas fourth Fireglow raced in second.
So Mi Dar was allowed to creep closer up the home straight on the far side by Dettori as Best In The World started to wilt and Fireglow was ridden to make her challenge.
Dettori pushed the button with around two furlongs to go and So Mi Dar soon surged away from the rest to come home four lengths clear of Fireglow, with Promising Run a further head back in third.
