Fairtrade products help farmers in poorer countries by making sure they get more of the money we spend.
But the farmers who grow the cocoa in chocolate get only a tiny amount of this.
Most is kept by the big firms which make the chocolate.
Fairer deal for famers
Fairtrade chocolate bars include Dubble and Divine - as well as other products like coffee and bananas.
Cat Deeley supports what they do.
She says: "It's a two-way deal. The people who produced the products you enjoy get a fairer deal for their hard work. What could be more simple?"
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'I thought slavery was gone'
