The model has had her initials 'CJD' inked on the side of her hand. Or put another way, the acronym for Creutzfeldt-Jakob disease. You know, mad cow's disease.
Not that Cara seemed bothered as she uploaded a picture of her new inking on Instagram, writing: "My new CJD (Cara Jocelyn Delevingne) tattoo by @bangbangnyc."
And after having the CJD design completed by New York artist Bang Bang - who also recently inked her 'wifey' Rita Ora - Cara took a turn with the ink gun herself, etching a design on his leg.
"Me tattooing a tattoo legend!! You must be crazy @bangbangnyc," she wrote on Instagram.
And don't expect her to stop there, as she recently told Glamour magazine, she wants 'loads' more tats, 'all over her body'.