The treat is 7% smaller than its previous size.
Wispa has become the latest chocolate bar to shrink down in size, in an effort by Cadburys to keep bars below 200 calories.
The treat is 7% smaller than its previous size and is still being sold at the same price.
In 2020, the brand cut the size of four popular bars - Curly Wurlys, Fudge Bars and Chomps.