Lah Ti Dar made it two wins from two starts in the Listed Tweenhills Pretty Polly Stakes for John Gosden and Frankie Dettori at Newmarket on Sunday.
The full sister to So Mi Dar impressed when winning on debut at Newbury last month and she confirmed that promise with a three and a quarter length win over Charlie Appleby's Expressiy.
It took Lord Lloyd Weber's filly a while to get on top, and she didn't look completely at home on the faster ground, but she came home really well for a decisive victory in the end, returning as even-money favourite.
Lah Ti Dar was cut to 4/1 from 7s for the Investec Oaks at Epsom with Sky Bet.
Sky Bet spokesman Michael Shinners said: "John Gosden has used this race for his top fillies, like Taghrooda, in the past, and this unbeaten three-year-old clearly commands respect as we look forward to the June Classics at Epsom Downs."