Prepare to go 'awww'… Robbie, 38, posted this gorgeous photograph of himself looking mightily proud while holding his two-day old daughter. The caption read: "Daddies second nappy change… Teddy's second day."
Robbie and his wife Ayda Field welcomed their first child together on Tuesday, 18 September, announcing the news via a post on his official website.
"Praise be. It's Theodora Rose Williams, affectionately known as Teddy," said a message. "Born 3.33pm on 18.9.12, 7lbs. 4oz. Baby, Mummy and Daddy are all rocking... Thank you for your best wishes."
Robbie and Ayda, who married in August 2010 in Los Angeles, California, announced they were expecting a baby back in March.
Speaking to BBC Breakfast this week about his new arrival, he said: "I can't help thinking... her mum's a comedian and actress and her dad is me. I just want a really quirky, kind kid. As long as she's kind and has got good manners then we're cool."
It's going to be a busy time for Robbie who's not only adjusting to being a new dad, but also promoting his new single 'Candy', taken from his upcoming album Take The Crown.
What do you think of Robbie and Ayda's choice of baby name? Let us know below!
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Watch Robbie's new music video for 'Candy' below: