The TOWIE star showed off her curves in lingerie designed by the model, who is currently pregnant.
Lucy wore her hair in soft curls as she posed in a push-up scarlet bra, accentuating her fab figure.
She posted the picture of herself on Twitter after shooting the new lingerie campaign in London.
Along with the snap, Lucy wrote: "Just finished shooting a great campaign for @ByCaprice ... Absolutely love the new collection x."
Lucy, who is rumoured to be dating Max George, has recently been filming workouts for her Results With Lucy website.
The 21-year-old's exercise and nutrition website aims to make her healthy living lifestyle accessible to fans.
Do you like the look of Lucy's underwear campaign? Tell us what you think!