Nursery assistant Gillian (29) and David (27), a machine technician, had an inkling their second child would be another boy, so when Mollie arrived, she was a lovely surprise.
Mollie weighed 10lb 3oz when she was born at the Ulster Hospital in Dundonald by planned caesarean.
"We thought we were having a wee boy, so were shocked and thrilled to see her," Gillian said. "Everybody says she looks like me."
Gillian praised the high standard of care from staff at the Ulster Hospital.
"They were great," she said. "The girls couldn't have done enough for me."
The couple's son, Thomas (3), has settled well into his new role as big brother.
He's welcomed the new addition to the family with open arms and is keen to make sure Mollie remains safe and happy.
"He loves her," Gillian said. "He's always kissing her and wanting to hold her. He's very protective of her."
Meanwhile, hands-on dad David is making the most of paternity leave.
David said: "I was delighted and completely in shock when she arrived.
"Now she's here we've got a boy and a girl so, as they say, I've got a gentleman's family."