Kate Middleton may have been using venom from Kiwi bees as a face treatment, similar to Botox, in the lead-up to her big day.
The royal bride is reported to have taken the beauty tip from Prince William's stepmother, the Duchess of Cornwall, Camilla.
The 63-year-old reportedly swears by the Bee Venom Mask.
The cream, which is also mixed with New Zealand Manuka honey, shea butter and rose and lavender oils, is sold online and in specialist boutiques.
It is said to work its magic by gently stinging the skin, leaving a tingling sensation and causing the body to direct blood flow to the area.
It claims to stimulate the production of collagen and elastin, which reduce wrinkles by relaxing and strengthening the muscles, the New Zealand Herald reports.
The venom is sourced from organic hives at Nelson Honey, in Tapawera, 30km south of Nelson.
But it's not readily available in the UK – which company was last month ordered by Britain's Food Standards Agency (FSA) to stop selling pots of honey, which includes the bee venom, in the UK.
The FSA ruled there was not enough evidence to prove that eating the venom was safe - triggering a Europe-wide ban.
A 50ml jar costs $112.
Other celebrities reported to be fans of the cream include Dannii Minogue, Michelle Pfeiffer and Gwyneth Paltrow.