If you've saved up for a toy or video only to find you've been sold a fake, then a special helpline launched on Tuesday could help you.
The government's Christmas campaign is designed to get the public to report fake toys, videos, CDs as well as other products.
The main cheats to look out for this year are fake Harry Potter toys which are expected to flood high streets and car boot sales.
You could help by reporting any fakes you spot by phoning the anonymous Crimestoppers hotline on: 0800 555111.
According to a group that campaigns against fakes, they make up as many as:
12% of toys and sports goods
11% of clothing and footwear
10% of perfume and toiletries.
This doesn't just mean worse quality goods and no refund if you break your favourite toy.
The government say fakes cost the country £1.5 billion a year and the loss of 4,100 jobs..