Champions New Zealand finished the HSBC Sevens World Series in style by winning their fifth cup with a comeback victory at Twickenham.
The All Blacks trailed Australia 21-0 in the final but roared back to win 52-33.
New Zealand had already secured the overall title ahead of South Africa before they arrived in London.
But they showed they were still hungry for more success after Australia, who were looking to give coach Michael O'Connor a winning send-off in his final match, raced into the lead.
Tries from Tom Lucas, Afa Pakalani and Con Foley were all converted but back came New Zealand through Tom Lucas and a brace from Scott Curry.
A Gillies Kaka try put New Zealand ahead but Foley crossed to level things at 28 points apiece.
It was New Zealand who were stronger in the final stages, though, as tries from Ben Lam, Kaka and Adam Whitelock helped them over the 50-point mark.
O'Connor praised his youthful side, sure to be a threat at the Commonwealth Games Sevens in Glasgow in July, saying: "They've done me and their country proud. I couldn't have asked for much more.
"New Zealand were just too good, but some of the players are just babies and I do believe they can go to the next level.
"We have seven starting players injured at the moment, we have got good depth. In the next couple of years, Australia can get up there."
England, who had lost 15-12 to Australia in the semi-finals, secured third place with a 26-19 win over Fiji, narrowly beaten 12-10 by New Zealand in the other semi.
Tom Mitchell, the England captain, was one of four try-scorers for the hosts as they finished the season fourth overall.
"There has definitely been ups and downs this weekend, we were disappointed with our performance against Australia," he said.
"The boys really turned it around and we put a lot of heart into that last performance against a good Fijian side.
"We are good enough to win tournaments when we play at our best, it is just about playing at a consistently high level throughout tournaments."
South Africa won the plate final, with Canada lifting the bowl and USA triumphing in the shield.