LONDON — It was the night that William and Harry publicly and triumphantly reclaimed their mother.

Before a global TV audience of millions yesterday and 63,000 cheering, dancing fans packed into Wembley Stadium, they delivered what they had most wanted — a night of “energy and fun” to remember the joie de vivre of Diana, the princess of Wales.

“This event is about all that our mother loved in life,” William told the crowd. “Her music, her dancing, her charities, and her family and friends.”

They have often said she would have been “the first up out of her seat and dancing.”

And they were certainly rocking in the stands to match her at the Concert for Diana, young and old — and in the royal box too where the princes watched the concert with 200 of their friends and guests.

They included Kate Middleton, 25, William’s former girlfriend, whose presence in the royal box, along with her sister Pippa and parents, Carole and Michael, did little to dampen speculation she and the prince may be an item again.

It was the first time they had been seen in public since news of their split broke — albeit she was some three rows behind him.

The status of Harry’s relationship with Chelsy Davy, 21, was less ambiguous as they exchanged a kiss and danced together to Nelly Furtado.

This was a celebration on the day that would have been their mother’s 46th birthday. Both princes have made known their hurt at the negative attacks on her since she became public property upon her death 10 years ago. Unable to defend herself, the very clear message yesterday was that they would do it for her.

Elton John opened with “Your Song” and was followed by the two princes. “Hello, Wembley” bellowed Harry.

Both initially looked a little nervous, but Harry braved one joke. “When William and I first had the idea, we forgot we would end up standing here desperately trying to think of something funny to say — we’ll leave that to the funny people and Ricky Gervais.”