Prince George looks just like Princess Diana in new birthday photo

On Saturday, Kensington Palace released a new portrait of Prince George to mark the royal's fifth birthday. Snapped by photographer Matt Porteous outside of Clarence House following Prince Louis' July 9th christening, the photo features a grinning -- and ever handsome! -- prince on the milestone day.

And while some royal fans were quick to call out the big difference between Prince George's pictures and photographs of Princess Charlotte, others noticed just how much the prince resembles his late grandmother Princess Diana.

Many fans took to Twitter to wish Prince George a happy birthday, while mentioning the resemblance. "He looks like his grandmother!" wrote one well wisher. "Prince George is adorable. I see Princess Diana in his beaming face!" exclaimed another.

From the smile to the crinkling eyes, the similarities between the two are evident.

Others were also quick to congratulate his loving parents Prince William and Duchess Kate on how he's been raised, something Princess Diana would have been proud. "He's so cute princess Diana would be so happy," wrote one fan.

Commented another, "He’s a fine looking boy! William and Catherine, you’re doing a fine job!" We agree!

RELATED: See adorable photos of the prince