Dress for wedding abroad

[ZootSuit]

I need some help and inspiration! I am going to my brothers wedding in Greece in June and no idea what to wear!
I like wearing dresses and getting dressed up, but my usual style is shift dress with sleeves, not sure I can get away with that.
So I need something suitable for the occasion and weather, but that covers at least the tops of my arms and flattering over stomach area (6 month old ds!)
Any ideas or inspiration gratefully received

[KP86]

Check Spring/summer dresses which were just released at TKmaxx this week. Some really beauties in there.