Cute plus size maternity formalwear.

I have a wedding to attend 10/9. I will be 23 weeks. I have a bit of a bump already and by then I am sure I will be showing more. Problem I am finding is I can not find anything to wear for this wedding, I am 5'10" and generally an XL or 1X. I have looked in almost all maternity stores by me.  Thinking of going to a plus size store and finding something nonmaternity but a larger size. We also leave for our babymoon on 10/24 so I was hoping to get double use out of this dress and so far no luck. Any suggestions?