Prince George is growing up so fast!

The bundle of joy, who was born in July, was spotted on his first beach vacation at Mustique with his mother Kate Middleton, 32.

The Duchess of Cambridge is seen on the cover of Hello! magazine smiling and holding her growing baby, who wore a cute little hat. Middleton dressed casually in a striped shirt, jeans and flats.

The magazine published the photos in its Feb. 3 issue but Middleton reportedly isn't taking any legal action against Hello! for the "off-duty" images.

"They probably feel it's pointless making a fuss," Majesty magazine editor Ingrid Seward told the U.K. Daily Mirror. "I think they are using a bit of intelligence, you can't go potty for everything because it would have no effect at all."

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E! News confirmed that Middleton and her son spent one week at a private luxury villa on the Caribbean island. They stayed in a four-bedroom house that came with a butler, chef, housekeeper and a gardener.

Middleton's parents and her sister Pippa were reportedly also staying at the house, which rents for about $13,000 a week. They were all there to celebrate Kate's mother's 59th birthday.

The last photos seen of Prince George were taken at his christening in October. Middleton and her husband Prince William smiled from ear to ear at the ceremony.