What does "fat-free" mean?

Silhouettes is a product with 0 grams of fat. Nada, zip, absolutely no fat. However the Canadian Food Inspection Agency allows products to be called “Free of fat”, "fat-free", "no fat", "0 fat", "zero fat", "without fat", "contains no fat", "non-fat" as long as they contain :

(a) less than 0.5 g of fat per reference amount and serving of stated size; or
(b) less than 0.5 g of fat per serving of stated size, if the food is a prepackaged meal.

Danone achieves a fat-free yogurt by a skimming process with its milk to extract dairy fat. During Silhouettes' skimming operation, fat is separated from the milk which results in two products: skim milk and cream.

What does "no added sugar" mean?

Silhouettes has no sugar added which means it does not contain added: white sugar, a food that contains white sugar, brown sugar, syrup, molasses, glucose, honey or fructose.

Silhouettes uses a sweetener called sucralose.
That said, "no added sugar" doesn't mean there is no sugar in the product. Silhouettes contains sugar in its natural form from milk (lactose) and fruit (fructose). Silhouettes Plain is the only flavour that does not contain fructose.