Yep, I'm young enough to have NEVER seen a nun in a habit. Nuns take a vow of poverty, so she wouldn't be allowed to keep much of the money she makes. I've never heard of a religious holding a regular job other than hospital work or teaching in a Catholic school.
Funny story and I hope no one is offended. This happened long long ago. I was in a city crossing the street with my two youngsters aged about 7 and 4. The older one, the boy sees a nun and asks me what she is wearing. I tell him it's a habit. He thinks for a moment and then with a puzzled voice says......a habit, you mean like little sister has a habit of picking her nose.