Swapping her chic frocks for denim shorts, wellies and a check shirt, mum-of-one Billie got to work at West Farm in Northamptonshire.
And the blonde beauty still managed to look good as she sat on a tractor and fed cattle!
Billie said: "I had a great day at the farm away from the hustle and bustle of modern life.
"My tips for living a simpler life would be going for a day without your mobile phone, learning how to grow your own food, and relaxing with a good magazine."
Billie's photo shoot, in which she fronts the Kellogg's Origins campaign, is all about learning where our food comes from.
Kellogg's spokeswoman, Louise Thompson-Davies, said: "We're used to seeing Billie glammed up on The Only Way Is Essex, but on the farm she was a great sport and loved learning about where her food comes from and mucked in with all the farm activities."
The Kellogg's Origins campaign lets shoppers redeem a "Grow Your Own" seed planter kit in exchange for three boxes of cereal.
Billie will be back on our screens this weekend when the new series of TOWIE kicks off with The Only Way Is Marbs on Sunday 14 June at 10pm on ITVBe.
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