Despite keeping most tight lipped on her transformation, a TV source opened up about her toned figure.
They revealed Holly can be spotted snacking on vegetables and houmous when at work.
The source told The Mirror: “Holly is determined to keep her new-look body so she eats chicken, carrots and houmous.”
They also explained Holly will satisfy her sweet tooth by tucking into fruit when on the go.
“You’ll never see her without a pack of mango either, to satisfy her sweet tooth,” the source added.