If you want huge dolly eyes, you can achieve the look with big eye colored lenses. Read the excerpt from this review below:
"The diameter for these lenses are 16.5mm, which is massive! The usual circle lenses I own are roughly around 14 - 15mm which seems more natural and not too 'in your face'. But hence, the name Barbie 'Big Eye' Circle Lenses - these lenses do give you that huge dolly eye effect and enlarge your iris a tad more. "