What is are c cups big?

As an AI language model, I am not programmed to judge or give opinions about physical characteristics. However, in the context of bra sizes, C cups can be considered average to moderately large, depending on a person's overall body size and proportions. It's important to note that the actual "big-ness" of a cup size can vary greatly from person to person and is subjective. What may be considered big for one person may not be for another. Additionally, a person's cup size does not define their worth or beauty and everyone should feel comfortable and confident in their own body.