Twix chocolate bars have shrunk in size with parent company Mars blaming the cost of living crisis.
The 23 gram bars in their multipacks have been scrapped for ones weighing just 20 grams - around 15% less.
Tesco is currently selling multipacks of 16 “fun size” snack Twix bars at the new weight for £3 – up from £2 for the previous size, according to trade publication The Grocer.
Sainsbury’s currently stocks the same size multipack for £2.80 – the same price as they had reportedly been previously.
Asda doesn’t appear to be selling the smaller bars yet and still has multipacks with 23g bars in them.
Morrisons ’ website was listing 23g bars in multipacks as out of stock.
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Parent company Mars is blaming the rising price of making the snack for the size cut.
A Mars Wrigley UK spokesperson told The Mirror: “At Mars we have been absorbing the rising costs of raw materials and operations for some time, but the growing pressures we are facing mean that more needs to be done.
“Reducing the size of our products is not a decision we take lightly.
“But we’re confident that our chocolate brands still offer our customers and consumers the best possible value for money without compromising on quality or taste.”
It comes as the cost of living crisis gathers pace, with accelerating food inflation placing pressure on UK households.
Last month, Consumer Price Index (CPI) inflation struck a new 40-year-high of 9.1% in the 12 months to May - with the Bank of England expecting it to reach 11% later this year.
Earlier this year, Cadbury reduced the size of Dairy Milk sharing bars by 10% as it passed on the impact of soaring costs to customers.
Parent company Mondelez also blamed rising inflation in the production of its chocolate as it reduced the size of its larger bars from 200g to 180g.
A report last year found nine in 10 Brits are furious about the curse of "shrinkflation" - where their favourite products have shrunk for the same price.
A study of 2,000 adults found 87% feel products they buy seem smaller than they were years ago, with 83% noticing the difference in their favourite chocolates the most.
As many as four in 10 adults are outraged at the reduction of a Quality Street tin by as many as 550 grams over the years.