"He’s a happy baby," the source told the publication of the newborn.
"He has lovely, puffy little legs and tufts of reddish hair. He’s really adorable."
Earlier this year, Meghan and Harry said they were unsure of who baby Archie took after.
"We’re still trying to figure that out," Meghan said during theirfirst outing as a family of threeat St. George’s Hall in Windsor Castle - where the royal couple had their wedding last year.
"Everyone says babies change so much over two weeks. We’re basically monitoring how the changing process happens over this next month really," Harry added.
"His looks are changing every single day so who knows."
However, now a source has confirmed that baby Archie has inherited his father's red hair.
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The most recent sighting of baby Sussex was when he attended Prince Harry and Prince William's charity polo match.
Archie - who was dressed in a white bodysuit - spent the day cosily wrapped in his mother's arms.