Showing they're not shy of poking a bit of irreverent festive fun at the charity's expense, their iconic panda - the symbol recognised across the world - has turned into a booze-fuelled reprobate.
"WWF is campaigning for even more enjoyment at this year's bash, and your contribution is vital," the party invite states, alongside a pissed panda in various comatose positions.
"WWF - Taking action for a great party," the invite exhorts. And like every party animal, the inebriated beast has even secured a trophy traffic cone.