Prompt to start with:

<lora:Arianrhod-09:1>, Arianrhod, blond hair, long hair, braid, blue eyes, large breasts, 

armor, knight, (shoulder armor, pauldrons:1.1), faulds, gauntlets, breastplate, (black_bodysuit:1.3), pantyhose, armored_boots, greaves, red waistcloak, cape,

Negatives: midriff, twintails

The armor is not perfectly model-accurate but it should be close enough.