As Tony Cervone explained, the animators originally had in mind more "tomboyish" traits for her, but feared that she would appear "too masculine".
So they ended up emphasizing her "feminine attributes".
Buster has been shown many times to be attracted to Babs, though the feeling is usually mutual.
Sometimes he nervously retreats from her advances, sometimes he returns her affection, and sometimes he even goes out of his way to impress her.
Buster Bunny, Babs Bunny: Now the video's begun.
Plucky Duck: I'm filled with elation/ I'm back from that vacation!
Optical Intrusion - Furrball accidentally glues a pair of magnetic 3-D glasses to his face and attempts to remove them Win, Lose Or Kerplowie - Babs, Plucky and Montana Max compete on a game show.