"Hashire sori yo~ Kaze no you ni~ Tsukimihara wo~ Padoru Padoru~"
Trigger word: padoru_padoru
(add christmas outfit so it has the correct outfit, colors etc can be specified for face you can just add :D)
Model used for examples is NoobAI XL Vpred 0.65S (First image uses personal lora of my oc)
Lora strength 1.0 is enough in most cases, lower strength can bring more variety.
(For some less popular boy characters 0.8 worked better, and specifying pants will more likely generate non dress christmas outfit, just put christmas dress in negatives if you don't want it works the best from testing.)