what to do?

Vanessa marched Lauren over to the sandbox. Lauren saw the neighbors watching them all turn to look curiously at them. True, Lauren was small for her age, but still big to be in diapers! Noticing their attention she threw a hand over her swaying nipples.

"I wouldn't do that." Her sister whispered. "We don't want them realizing your an adult, do we? Little girls don't care who sees their little boobies."

Lauren saw the twisted logic. Her covering did signify she was older, old enough to be embarrassed of her exposure. But surely if they saw her body they'd figure it out anyways right? Her breasts weren't THAT small, were they?

Would she drop her covering arm and play the child or keep covering?