How long did it take for your dress to come in?

My wedding is October 19th and I ordered my gown in January. It’s a Watters gown. I’m guessing it takes about 6 months but I’m starting to just get a little nervous. I plan on calling the boutique next week or so just to see if they have any info. They assured me it would come in time for alterations. I’m sure they told me an estimated time but it was such a whirlwind that day I can’t remember.