If your shower is going to be in June, I would go for something light. Maybe like a wrap dress in a lightweight knit fabric. The wrap would flatter you and you wouldn't be uncomfortable in it either. You could also do one of those gauzy dresses or a maxi dress if your into it; those also flatter a pregnant woman. Good luck!
Re: Shower dresses for June
If your shower is going to be in June, I would go for something light. Maybe like a wrap dress in a lightweight knit fabric. The wrap would flatter you and you wouldn't be uncomfortable in it either. You could also do one of those gauzy dresses or a maxi dress if your into it; those also flatter a pregnant woman. Good luck!