TUBS of Celebrations are the latest chocs to fall victim to shrinkflation.
The 600g box has been cut to 550g — equal to a reduction of around five sweets.
Maker Mars Wrigley confirmed the move after a warehouse worker shared a photo of the tub, priced at about £6, and the previous size.
The worker wrote: “Just had a delivery of stock ready to be shipped out. Celebrations tubs getting smaller each year . . . but price will inevitably go up!
“Gonna get a few disgruntled customers this Christmas.”
Mars blamed the rising costs of raw materials and operations.
Cocoa prices have hit a record high following a poor harvest in Africa triggered by bad weather.
Mars has also shrunk the tub size by 17 per cent to reduce plastic.
It could not say if prices would rise further.
A spokeswoman said: “It’s not a decision we have taken lightly but it’s necessary for shoppers to still enjoy their favourite Celebrations treats without compromising on quality or taste.”
In 2022, Mars swapped the 23g bars in its Twix multipacks for 20g alternatives.
Its 189g Maltesers bags were reduced to 175g.
Last year, its Galaxy bars shrunk from 110g to 100g.
