Care aide interview: What to wear? What to expect?

Hey All,

I'm a nursing student, BSN program, just finished my first year and registered to be a care aide. I have been invited to my first interview in a major healthcare authority and now wondering what to wear?

Second question: What kind of questions may be asked? Have no idea... It will be my first interview in healthcare. It shouldn't be the usual 'cubicle plankton interview' type of thing, right? Maybe something about types of ceiling lifts I got to use and stuff?

Thanks!