Jack Robinson and Isabella Nichols have made it a double triumph for Australia with thrilling victories in the Rip Curl Pro finals at Bells Beach.

A resurgent Nichols claimed the biggest victory of her surfing career by downing young Brazilian star Luana Silva in the final.

An hour later, Robinson completed the magical afternoon for Australian surfing. 

Nichols threw down the gauntlet with a big early score of 8.33 points and backed it up to win 16.26 points to 12.67.

The 27-year-old only made her way back onto the elite Champions Tour (CT) this year.

She advanced all the way to the final of this month’s El Salvador Pro, then went one better on Sunday at the famous Victorian break.

“The process for this win has honestly been a 15-year process,” Nichols said.

“I’ve been coming here since I was 15 years old.

“All the trips down here, three times a year, to come down and work on my technique, and it’s all paid off.

“To have a bell, honestly, this does not feel real.

“I’m speechless.”

Nichols’s only other victory on the CT came three years ago at the Margaret River Pro.

Paris Olympics silver medallist Robinson left it late before edging out Japan’s Kanoa Igarashi 14.14 points to 13.87 in the men’s final.

“Far out man, it’s just a surreal feeling,” Robinson said.

“It’s been a special week, I’ve had my whole family here.”

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