The filly was piloted by William Buick and was priced at a reasonable 3/1 ahead of the race commonly known as the Fred Darling.
The three-year-old powered forward at the furlong pole to gain further ground and beat the 11/4 favourite, Roger and Harry Charlton's Jumbly.
Wild Beauty was a Grade One winner when facing the Natalma Stakes at Woodbine last season. That was the highlight of an eventful juvenile year during which the filly was triumphant on three occasions and also placed second twice.
Ahead of the weekend, Wild Beauty was a 20/1 shot for the upcoming 1000 Guineas at Newmarket on May 1. However, that has now been shortened to 12/1 following her Newbury success.
"She did it nicely. She did it really nicely," Buick said.
"She wanted a mile last year and she stayed on really well and went through the gears nicely from just over three out.
"A mile next time out will suit her down to the ground. She will have to go for one of the Guineas.
"We will leave that to Charlie and the team. I don't know which one, I honestly don't, but the French one was touted beforehand."