England's Laura Robson was unable to add the Australian girls' title to her Wimbledon crown, losing 6-3 6-1 to Russian Ksenia Pervak in the final.
The 15-year-old Robson admitted after her semi-final win against top seed Noppawan Lertcheewakarn that she was feeling low on energy and she made a sluggish start to the first set and from there never really recovered.
Pervak, the third seed, broke the 15-year-old six times in the match on the Rod Laver Arena show court taking just 74 minutes to seal the win.
Robson was broken twice early in the opening set to trail 3-0 and although she dug deep to claw her way back to 4-3 she squandered three break point opportunities in the next game which allowed Pervak to hold for a 5-3 lead.
Robson then served two double faults - her fourth and fifth of the match -on the way to being broken for a third time which handed her opponent the first set.
The second set started just as the first had, with Robson trailing 3-0 early on.
She was down again in her next service game but simply could not conjure up the winners to deny the Russian a 4-0 advantage.
With hopes of a win starting to fade, Robson's grim determination earned her the break of serve against Pervak to get on the board.
But any hopes of a comeback were short-lived as the Russian broke her again to take a 5-1 lead and from there served out the match.
Afterwards an upbeat Robson commented: "It's definitely very close to the same (as Wimbledon) because it was just really good to overcome all the weather this week. It's definitely a really big achievement for me.
