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10th December 2017
12:12pm GMT

Why? Well, Sainsbury's did some research and worked out that this year it's expecting to sell a record-breaking number of bottles of prosecco on Saturday December 23.
The exact number? 489,000 bottles.
Sainsbury's notes that there will also be a mad rush in large supermarkets such as Tesco, Aldi, Lidl and more.
If we were you, we wouldn't risk it and stock up before or on December 22!