I remade the classic Mario and Luigi clothes from The Cartoons:


There not perfect but i'm fine with it. Keep in mind that the screenshots are from MelonDS with increased resolution. It wont look that good on the original DS.
Download:
https://nsmbhd.net/file/kXjYnVnn463okuzr/luigi_model_LZ.bin
https://nsmbhd.net/file/j2iXPfTlqriDsm7M/mario_model_LZ.bin
To use them go to ROM File Browser => root => player
click on mario_model_LZ.bin/luigi_model_LZ.bin click on replace and choose the downloaded File
then you have to click LZ Compress and you're done.