AUSTRALIAN superstar Winx claimed a 20th consecutive victory when she came fast and late to win the Group 1 Colgate Optic White Stakes at Randwick.

Chris Waller's mare had lots of ground to make up in the one-mile feature, but she flew at the death to defeat Happy Clapper by a length and a quarter.

Winx is now likely to have one more run before she tries to win the Cox Plate at Moonee Valley on October 28 for a third consecutive year.

Waller said: "True champions normally come out and win. We should respect Happy Clapper because he is a very good horse in his own right and we had to fight to get past him.

"I'd say she'll have one more run up here if we can and at some stage she'll head to Melbourne but we'll lock it in over the next week.

"The first Cox Plate she won it off three runs, next Cox Plate she won it off four and she will probably run in it off a fifth run this time."

Jockey Hugh Bowman said: "I expected to be closer to the speed but the pace was strong. At the top of the straight she had a lot of ground to make up but after her last two performances I knew she could do it. I am just so proud of her."