Kate Middleton has revealed that Prince George is getting big very quickly.

The Duchess of Cambridge spoke about her three-month-old son during a visit to London charity Only Connect yesterday, an organisation that helps former prisoners and young people at risk of reoffending.

Kate, 31, was given a cute all-in-one for George by ex-offender Aaron Russell-Andrews, who is pursuing a career in acting after receiving support from the charity.

[It’ll be] a very good fit as he is growing up very fast,’ Kate said.

He’ll like it.’

Aaron, 22, held his 20-month-old daughter Teegan as he chatted to Kate and the little girl cheekily tried to snatch George’s gift back when it was presented.

The Duchess laughed and admitted: They’re very demanding at this age.’

Prince William, 31, joined Kate for the trip but ever-growing George – who was last pictured at his christening last month – stayed at home.

SEE PICTURES Kate Middleton stuns in Jenny Packham dress with Prince William at Tusk Conservation Awards

SEE PICTURES Kate Middleton shows off slim post-baby body out with Prince William

SEE PICTURES Prince William leaves new mum Kate Middleton and Royal baby George to play polo with Prince Harry

Anna Francis