Every year popular Yukata runs out early as you think. Selling season starts in April, climax in May, June and bargain sale starts in August. Therefore, if you are intending to buy Yukata this year I'll recommend you to start searching from today.
Below picked up are new released Xmiss Yukata are available to buy direct from Japan on Rakuten Global. The simulator which the store provides might help you to coordinate Obi belt and accessories.
If you have interested to buy refer "How to use Rakuten Global" But maybe you don't need to, because it's easy.
Yukata is a casual traditional Japanese clothes. If it’s a first time to try Yukata and worry about how to put on, search through the internet how to “wear” or “put on” etc. Especially videos from users are so good! And fashionable Yukata might make your summer memorable!
Relative: How to wear Yukata instructions and videos for Women