This is Terra (or "Tina" in JP) from Final Fantasy III Final Fantasy VI.

Her base prompt using her portrait/modern colors:

t3rr4, blonde hair, purple eyes, earrings, medium breasts, jewelry, long hair,

Her base prompt using her FFVI sprite colors:

t3rr4, green hair, blue eyes, earrings, medium breasts, jewelry, long hair,

Her outfit:

tube dress, collarbone, bare shoulders, covered navel, short dress, elbow gloves, strapless dress, cleavage, red dress, cape, white pantyhose, polka dot legwear, boots, high heels,