Clothes for the wedding day are easy to rent. Might as well buy it. . If you want to rent. It would be better to rent there.
If you have the conditions, of course, it is not bad to buy it. It's brand new. In fact, buying a new one is also a waste. Anyway, it's only worn once, and it will be used as a souvenir in the future. You can rent it at the place where you took the wedding photo. Some of them can be provided free of charge or rented. Many places will do. Anyway, many big flower shops and some wedding companies have them here. Anyway, it's ok, nothing special. Happy wedding!