Germany located client want to buy clothing

I want to start an online boutique and I have some ideas which kind of clothes I want to sell.
I want to sell cocktail dresses and I could send you some examples how I want it to be exactly.
As I said I am new in this business I don't want to order that much of clothing,
therefore I am searching for the right manufactures.
I hope you can help me, if not maybe you can recommend me the right clothing manufactures who make cocktail dresses which should be very good from quality,
the fabric