Postponing church wedding - need new dress

Hello all,


We are waiting for an official announcement from our venue, however I am preparing that we will move our wedding to 2021. We will still get married in July 2020 but now it will just be a small backyard wedding - immediate family Instead of our 200+ people church/reception wedding. I will not be wearing the dress I bought, I want to wear a different dress. Any ideas where I can look for a new dress? Something simple that can be ordered online under $300. I don’t want to spend a lot on it since we will be having our large wedding next year. Please give recommendations! As well as any ideas what to do now since we are going to postpone