Una welcomed her second child with husband Ben Foden earlier this month, and since his arrival, Tadhg has been a big hit with his mummy's bandmates.
Catching up on her share of cuddles yesterday, Mollie told fans she had had "the best day" visiting her pal and her baby boy.
Taking to Twitter, the blonde beauty shared one of the first pictures of little Tadhg and he looks just gorgeous all dressed in blue, sporting a full head of hair.
Alongside her photo, Mollie tweeted: "Had the best day yday with @UnaTheSats! Got a performance from Aoife of Frozen & a cuddle with the little man himself."
Earlier this month, Una gave birth to Tadgh on 2 February, with rugby pro Ben confirming their son's arrival shortly after.
He tweeted: "Tadhg John Foden has been born! Mum and baby are both amazing and healthy. He has a full head of hair and his mummy's lips! #babybenuna."
Una then thanked fans for their well-wishes, saying she was "so so so in love" with her baby boy.
Parents Una and Ben first announced they were expecting baby number two in September last year. Taking to Instagram, Una let her two-year-old daughter Aoife-Belle take centre stage, sharing a picture of her wearing a top with the words "I'm going to be a big sister" written across it.
Una has since said she can't believe she, Ben and Aoife are now a family of four!
Meanwhile, the Fodens aren't the only Sats family to welcome a new addition this year.
Last month, Frankie Bridge announced she too is pregnant with her second child, and she and husband Wayne Bridge will be welcoming their unborn baby later this year.
They are already parents to son Parker, one.
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