Self-plug, I can't say they are "authentic" because, well, I'm not in Japan

However, I do use silk & bamboo cotton for kimono & yukata. Yukata have quicker turnaround times than kimono, no matter how informal the kimono given how rare fair-trade & organic silk is...
For information I have an ad on
KijijiIf you are local, no shipping charges. I'll just deliver it.
If you are not, I only use insured & trackable shipping using water resist & dirt resist packaging that is 100% recyclable/reusable.