"Put a proper habit on and things will turn around."

From Pointed Arches:

I have met a lot of nuns now, and I can tell you from experience that although it is one that can occasionally be misinterpreted, or even deceptive, the traditional habit is a signal, a word spoken clearly about the community's intentions. There is no one who does not know that clothes are a means of communication. Clothes that are deliberately designed for the purpose of religious identification, doubly so. It is important not to be taken in by appearances, but it is a mistake, perhaps even a subtle form of Manichæism to say, as do many modern sisters (usually with a rather defensive tone,) 'we aren't concerned with externals'.

Externals are usually an excellent indicator of what is going on inside as any mother knows who sees her teenage daughters beginning to adopt the standard (un)dress of modern girls. (Entire manuals have been written for parents and teachers on how to spot drug abuse, occult involvement etc, from changes in a child's appearance.)