I need a simple, non-festive dress for my sister's wedding (in two weeks) under ₹5000 in Chennai, but I don’t know where to buy it offline and my idea to try the below fit.

I need a simple, non-festive dress for my sister's wedding (in two weeks) under ₹5000 in Chennai, but I don’t know where to buy it offline and my idea to try the below fit.