"Are you big or small?" is an English equivalent of the French phrase Est-ce que tu es grande ou petite? The interrogative posed to a feminine family member, friend or peer also may be rendered literally into English as "Is it that you are big or little?" The pronunciation will be "eh-skuh tyoo ey grawn-doo puh-teet" in French.
It means: 'Do you have a big or a small family?'
Translation: Are you (f.s.) big or small?
Est-ce que tu es grande ou petite means "are you tall or small?" in French.