PRINCE George sung along to Sweet Caroline while proudly waving his flag alongside his sister Charlotte at the Queen's Jubilee Party.
George and Charlotte waved their flags in time with the music while the young prince belted out all the lyrics to the classic hit sung by Sir Rod Stewart at the star-studded concert.
The little ones charmed Brits watching the show from home with their celebratory spirit.
The Cambridges danced in their seats to We Will Rock You and Sweet Caroline as they enjoyed a night out at Party at the Palace.
Kate, who looked stunning in white, was also in high spirits as she accompanied husband William to the glitzy event.
She laughed out loud as she chatted with Mike and Zara Tindall, who were seated behind her.
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Kate shared a joke with Princess Charlotte before music started to play.
As Adam Lambert performed with Queen, she was spotted shaking her shoulders and smiling as she danced.
And she and William appeared to know every word to Any Dream Will Do, signing along as Jason Donovan took to the stage later on.
George, dressed in a navy blue suit, was seen chattering away excitedly to dad William before the evening began.
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Father and son beamed at each other as they took their seats.
Charlotte enthusiastically waved her Union flag as she attended the concert.
It was a big day of firsts for the little royal.
She also joined George and her mum and dad for a visit to Wales earlier on Saturday.
The seven-year-old stole the show as she pretended to conduct a band - and appeared to dip into a curtsey.
Princess Anne was also captured on camera yesterday as she burst out laughing at something brother Charles had said.
More on the Queen's Jubilee concert...
- Her Majesty had Brits in stitches after she took tea with Paddington Bear - and pulled toast out of her handbag
- Zara Tindall cheekily poked Prince George with a flag as mum Kate giggled
- Brits were moved as Charles thanked "mummy" in a moving speech as he urged the audience to cheer
- Geri Horner left viewers cringing with her very earnest Jubilee message
- There was drama outside as protesters were arrested moments before the show began
- But it didn't stop hundreds of thousands of royal fans enjoying the concert in The Mall
The Queen did not attend the festivities - but she recorded a hilarious clip with Paddington Bear, which was screened before the performances began.
In the skit, the pair - both much-loved British institutions - met for a chaotic cream tea.
Her Majesty jokingly revealed she shares Paddington's love of marmalade sandwiches and quipped that she keeps an emergency stash in her trademark handbag.
On Saturday night, the Queen watch the performances from world-famous artists including Sir Elton John and Diana Ross from the comfort of her home.
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Harry and Meghan were also not in the audience.
The couple remained at Frogmore Cottage after spending the day celebrating daughter Lilibet's first birthday privately.
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