There are several reasons you may say ‘Sell my wedding dress!’.
One is you never liked it anyway and are just not that sentimental (me)
That Honeymoon turned into a baby moon without your knowledge and what once seemed like a good idea to spend $5k on a wedding dress is now looking a bit extravagent when looking at the cost of a pram!
Whatever the reason, you need to make sure you will not regret it and once you are comfortable with that then look around to see what is out there and how they are priced.
You can place your dress with a dedicated wedding dress classified such as preownedweddingdresses.net.au or you can go with a local free classified such as Gumtree, eBay etc. By placing it with a specialty site you are not going to get as many ‘Crank’ enquiries and may be able to ask a higher price as you are getting serious brides.
Good luck with whatever you decide!