It clearly worked, as the former Made In Chelsea star shared a picture of herself looking utterly gorgeous on Monday morning, with just a slick of make-up on as she blew a kiss at her camera phone.
Millie, 24, had been flexing her culinary skills over the weekend, making a delicious looking Sunday roast with a huge slab of beef lying on top of some vegetables she planned to cook.
Millie followed Jamie Oliver's recipe for his 'perfect roast beef', and captioned a picture of her meat with a glass of wine symbol.
Sounds like the perfect Sunday to us!
By this morning (2 December), Millie had decided to ditch the heavy food and get healthy again, so she chomped her way through some poached eggs, smoked salmon and a whole avocado.
Millie said: "How do you like your eggs in the morning?"
With all those vitamins, it's no wonder Millie looked so fresh-faced in her selfie!
The beauty junkie has been busy staying in shape after her wedding to husband Professor Green, and frequently uploads pictures of herself in training.
We love her approach - treats on the weekend and health-kicks during the week!
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