"Ma'am, am I cute?"
Translation:아주머니, 제가 귀엽습니까?
제가 = 저 + subject particle 가
저는 = 저 + topic particle 는
The subject particle marks the subject of a verb.
In very simple sentences, the topic particle can replace the subject particle with the same overall meaning, but possible subtle differences based on context. 남자가 먹습니다 (the man eats) vs 남자는 먹습니다 (the man eats or a man eats or men eat or as for this man in particular, he eats etc).
However, the topic particle takes on different uses in more complex grammar. It's best to initially translate it as "as for X" to get the general meaning of the sentence before smoothing it into a natural sounding English translation.
A simple example is verbs that can't take objects. 저는 사과가 좋습니다 (as for me, the apple is good = I like the apple).