The TOWIE star uploaded the picture to Instagram on Wednesday (31 July) to announce she'll soon be adding yoga workouts to her already successful Results With Lucy website.
Results With Lucy aims to give Lucy's fans hints and tips about how to achieve their ideal figure by following her workout and healthy eating regimes.
And she seems to be inspiring plenty of her followers, with one writing on Instagram: "I'm hoping to look half as good as you. Im currently on a serious diet and exercise regime showing results! Looking amazing @lucymeck1."
Lucy has, however, had some fans worrying that she's getting too skinny - although she's assured them this is not the case. On the last season of TOWIE she was seen telling Jessica Wright: "I'm getting so much stick at the moment about my size. It's really annoying me. I'm healthy. I am a six to eight, which is small, but it's through exercise."
As well as today's picture, the 21-year-old reality star recently shared a YouTube video featuring behind the scenes footage of herself working out and cooking up some nutritious meals.
Watch Lucy working up a sweat in her teaser video below:
With so much effort going into her figure no wonder Lucy was named Reveal readers' favourite celebrity bikini body back in May, beating competition including Kelly Brook and Myleene Klass.
Aside from focusing on her website, the star has a busy month ahead with trips planned to Las Vegas and Los Angeles, not to mention her 22nd birthday to celebrate in style.
She's also joined forces with model Caprice for a new underwear campaign, tweeting at the weekend: "Just finished shooting a great campaign for @ByCaprice ... Absolutely love the new collection x."