Which Dress is better for wedding Dinner/celebration ? 6mos pregnant

Me and my husband never had a wedding we chose to pay for

IVF

. And my husbands mom offered to pay/ put together a sweet little wedding dinner/get together. She rented out a cute room out in the country area and we are going to decorate it kind of wedding style I guess and we are going to have food catering presents maybe some music a photographer a wedding cake it’s not anything too crazy but It will be in March it might be a little colder but it will be indoors. I also will be around 6 months pregnant I’m due in July! So I would love to have my hair and makeup done I’m thinking in some type of up-do. With the dress.