This model has been a small challenge because the photographic material that exists is of quite low quality. In addition to a great search I had to touch up some photos. As most of the photos used are of her with the Wonder Woman costume, just typing in the Prompt "wonderwoman, wonder woman, and/or WW" the generated image already appears with that costume, with the exception of the boots since the images were for the training they have focused more on the face and half the body to obtain more detail). If you don't want the image with the WW costumes, just don't write it in the prompt or add it to the negative prompt, if the tiara still appears, just write it in the negative prompt. The best values I have obtained around 0.8 of LoRA.

You can run for free here: https://tensor.art/models/626697722314921969?source_id=nz-wol_ll0C1pvQsaHny9hQk

Easy prompt like: Closeup high detailed portrait of young pale Lynda Carter wearing a wonder woman suit in a street, beautiful face, dramatic lighting, Lynda, big breast, 1girl, wonderwoman,

Negative prompt: (deformed iris, deformed pupils, semi-realistic, cgi, 3d, render, sketch, cartoon, drawing, anime), text, cropped, out of frame, worst quality, low quality, jpeg artifacts, ugly, duplicate, morbid, mutilated, extra fingers, mutated hands, poorly drawn hands, poorly drawn face, mutation, deformed, blurry, dehydrated, bad anatomy, bad proportions, extra limbs, cloned face, disfigured, gross proportions, malformed limbs, missing arms, missing legs, extra arms, extra legs, fused fingers, too many fingers, long neck, BadDream, UnrealisticDream, belt, panty, navel piercing, morbid, mutilated, extra fingers, mutated hands, poorly drawn hands, poorly drawn face, mutation, deformed, blurry, dehydrated, bad anatomy, bad proportions, extra limbs, cloned face, disfigured,