For maybe 3 years now, my mum has struggled to dress herself. If left to her own devices trousers would be on the wrong way round, ditto jumpers. Shoes would be on the wrong foot, etc.. Not to mention not being keen to change her top half every day (I don't push it).
I have to do it (it's no trouble).
Comfy, loose fitting trousers help, normal t shirts and jumpers. Reassurances I'm not looking (to preserve her modesty).