Kieran Hayler, new husband to Katie Price, found out last month that he's about to become a father.
So it's no surprise that Kieran, 25, is getting in some practice with the model's three children Harvey, Junior and Princess. He was spotted looking like a doting step-dad as they had a family day out.
Having already built a strong relationship with the little ones, Kieran held hands with Princess Tiaamii as they took a stroll around central London.
Earlier in the day, Katie had bizarrely dressed as a pink panto horse to promote the anniversary of her KP Equestrian range, but thankfully she looked a little more casual as she walked around town.
Kieran may be a fairly new addition to the family, but he seemed completely relaxed around Katie's brood chatting away to them as they wandered along.
He and Katie tied the knot in Barbados back in January after a whirlwind two month romance.
Meanwhile, reports have emerged that she and ex-husband Peter Andre, the father of Junior and six-year-old Princess, could finally be putting their years of public conflict behind them to meet face-to-face.
According to Heat magazine, Katie and Peter are planning to speak properly in what will be their first proper encounter since December 2011.
Katie is due to give birth this summer.
For more information on pregnancy health and advice go to www.nhs.uk/Start4Life