If the default triggers don't work, try some of the following terms. In testing some of these helped get better results. I had the LoRA at a strength of 1 and CFG at around 3. Higher CFG tends to lead to bleeding of the terms used for the outfit and will not produce as good of results in my experience.
mira-paj, lavender sleeves, sweater dress, fuzzy bear sweater, white bear, (pink bow on bear's ear), (paw prints), white sweater, multicolored sweater,
This is not meant to reproduce Mira herself, but just this particular outfit. Maybe use this in combination with another LoRA.