I'm looking for a long, formal to semi formal gown to wear to a wedding in a few weeks. I'll be almost 17 wks pregnant, but am not expecting to need true maternity sizes by that point (this is my third pregnancy, I'm in my regular clothes at 12 weeks, and pretty much didn't wear actual maternity dresses until the very end of my previous pregnancies).

I have a knee length, stretchy/bodycon type of lace dress in one and two sizes up from my pre preg size that might work. However, my MIL just suggested that maybe I should wear a long dress after all (it's BIL's wedding), since every other woman in family photos is in the wedding party and will wear a long gown. Originally shed said she thought maybe it wasn't right for me to wear a long gown since I'm just doing a reading.

Color wise, bridesmaids are wearing mauve ( Alfred Angelo Love's First Blush),, my daughters are wearing rose gold brocade (flower girls), my MIL is wearing a light grey/lavender beaded gown. I'd originally chosen a dark purple for my shorter dress but am open to other colors.

Those of you who like to style, I'd love photos/links of anything you think might work! Thanks! I'll be looking for a size 4 or 6 and would ideally like to spend $150-ish or less.