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Hard to believe Prince George is almost 4-months-old! While visiting the London headquarters of charity Only Connect with husband Prince William on Nov. 19, Duchess Kate gushed about how big their son is getting.

PHOTOS: Prince George's baby album

The 31-year-old Duchess of Cambridge showed off her slim post-baby body in a brown Orla Keily dress while visiting with young people in the charity's offices. Only Connect is an organization that works with prisoners, ex-offenders and young people in an effort to reduce crime.

PHOTOS: Kate's post-baby body style

During her two-hour visit, Kate chatted with ex-offender Aaron Russell-Andrews, 22, and his 20-month-old daughter, Teegan. Russell-Andrews gave the new mom a personalized onesie to give to Prince George. The adorable outfit was a size 3-6 months, and featured the Only Connect logo on the front. Kate was overheard telling Russell-Andrews that the onesie would be a good fit, and that George is growing up fast.

At one point in the exchange, Russell-Andrews' daughter apparently got a little jealous over the onesie. "Teegan tried to take back the babygro, she's very cheeky," he told Us Weekly of his little girl. Kate sympathized with him and said, "They're very demanding at this age."

PHOTOS: Kate's body evolution

During her tour of the charity, Kate also tasted cakes made by trainees from Switchback, a homelessness charity that aims for rehabilitation through catering. While noshing on small pieces of an iced ginger sponge and chocolate cake, the Duchess nodded her head in approval.


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