After pregnancy dress/newborn photos

Ri

So last baby I honestly spaced out and we did newborn photos and the day before I had to scramble to find something that fit me.

I want to plan ahead this time and feel really pretty. I am normally a size 22 and have put 7 lbs on and am 34 weeks. Where should I find a pretty blue dress? Would you buy maternity or plus size? Any recommendations, please and thanks!