PRINCESS Charlotte made a secret gesture to big brother Prince George as they stood on Buckingham Palace’s balcony which shows she looks out for him.
As the Platinum Jubilee celebrations came to an end on Sunday, the royals stepped out for one last appearance on the terrace.
As the national anthem played, Prince George, eight, was seen placing his hand on the balcony ledge.
However, Princess Charlotte, seven, subtly nudged her brother’s arm, reminding him to stand up straight during the song.
George was then seen correcting his posture and putting his arms by his side.
The youngsters joined the Queen alongside their parents, the Duke and Duchess of Cambridge, Prince Charles and Camilla for the closing event.
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And eagle eyed lipreaders caught an adorable moment capturing the siblings bond while on the balcony, reports .
Princess Charlotte, seven, can be seen flinching after the cannon went off.
Her big brother, Prince George, saw her reaction, prompting him to turn to her and say, "That made you jump," to which she replied, "That made me jump!"
And it wasn't the only sweet moment between the siblings caught during the four-day celebrations.
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Royal fans were touched by Princess Charlotte's adorable gesture to Prince George while at a royal engagement in Cardiff on Sunday.
The children were accompanied by Kate and William to meet performers at a Platinum Jubilee concert at Cardiff Castle.
Princess Charlotte, who is known for her fun personality, often spotted pulling sweet faces and waving at photographers.
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But she showed her tender side while out in Wales as she took a small purple flower and gave it to her brother, Prince George.
Their younger brother, Prince Louis, four, stole the nation's heart with his cheeky facial expressions throughout the Jubilee Pageant on Sunday.
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At times, Prince Louis was seen playfully shushing his mother, putting his hand over her mouth, while other times, fans saw him placing his hands over his face and also dancing.
During the show outside Buckingham Palace, the royal tot also clenched his fists and also joined his hands together as if in prayer.
The youngest Cambridge child was also seen cuddling up to his devoted mum Kate and giving her a sweet hug.