Joined by fiancee Emily MacDonagh and baby daughter Amelia, one, the family were all smiles as they took a ride on a tractor (safely supervised, of course!) and met the animals.
In one photo posted to Pete's newly-opened Instagram account, medical student Emily is seen with Princess perched on her lap and Junior next to her as they stare down at the camera from a tractor.
Another image shows Peter and Emily with their daughter Amelia who, as always, has her faced turned away from the camera.
How fab does Emily look?! Beaut!
While Peter's children with Katie - Princess and Junior - frequently featured on the couple's reality shows, Pete and Emily have always said they're eager to keep Amelia away from the spotlight.
They welcomed Amelia on 7 January.
Peter's looking after Princess and Junior while his ex-wife Katie Price competes in the current series of Celebrity Big Brother.
She entered the house as a surprise late housemate last week.
Ahead of arriving, the ex-glamour model admitted she'd be missing her kids. She's also mum to son Harvey from her relationship with Dwight Yorke, and babies Jett and Bunny from her marriage to Kieran Hayler.
"That is my biggest thing, the family. It's going to be hard because I don't even like having a night away from them, but I know that is part of the deal and you just have to get on with it," she said.
"Junior and Princess go to Pete's. We split them half and half, so they'll be alright. It'll be me; I know I'll find it difficult."
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