Lucy, 22, is wearing a risque black thong leotard in the advert, teamed with black sky-scraper heels, and she is carrying two dumbbells.
Sharing news of her latest project with fans, Lucy tweeted the picture, adding: "After lots of planning I'm excited to announce the launch of my very own BootyCamp for girls!"
Lucy's BootyCamp With Lucy offers fans two nights accommodation at the swish Condover Hall in Shropshire. But if you're after a relaxing spa break then think again!
The days are packed with a full workout programme, including hikes, cardio exercise and yoga. Guests will also be given nutritious meals and a tailored eating plan to follow once back at home.
They will also get the chance to meet Lucy and her team and take home a special goody bag. Ooh! Prices start from £249 and Lucy is taking bookings now.
In June, fitness fan Lucy also launched Results With Lucy, a website packed full of health and nutrition advice for subscribing fans.
Earlier this year, Lucy won Best Celebrity Body in a survey of Reveal readers.
We can see why, there's no stopping her!