One's dress, attire, or overall appearance, including clothing and grooming.
面接では身なりをきちんと整えて行ったほうがいい。
It's better to go to an interview with your appearance neatly arranged.
身なりだけで人を判断してはいけない。
You shouldn't judge people solely by their appearance.
彼女はいつも身なりがきちんとしている。
She always has a neat appearance.