The beautiful saleswoman asked as she wrapped the gloves in a bag.
Literal
Beautiful-person clerk [topic-は] gloves [object-を] bag [in-に] wrapping [while-ながら] asked.
包みながら尋ねた uses ながら for simultaneous actions — wrapping while asking. 美人店員 is a compound: 美人 (beautiful person) + 店員 (clerk). A narrative scene-setting detail.