Love me Two Times-Taftville This place is worth the trip. There are so many dresses to chose from with a range of prices. I bought a brand new Maggie Soterro for 525$ (I ended up reselling it because I ended up going with another one, but that's a different story)
Ragtime- Watertown Great selection and the owner is willing to negotiate prices. Also, this place has second-hand beaded belts and boleros.
I had to share these two places because the customer service was outstanding. There is also a place in Glastonbury but the prices are a bit higher.