Tropical wool is surprisingly comfortable in heat and holds a crease well
Here is an actual cobalt blue 1910s dress with a bit of Grecian inspiration (OK, so its 8 years earlier than the Wonder Woman time frame, but so was some of the films costuming *cough*): This gowns snug silhouette, draped tightly over the waist and hips to showcase a small waist and a smooth, curvaceous figure, is typical of 1908-11
Destination weddings happen in locations far from home, often in warm climates like Mexico, Hawaii, the Caribbean, or coastal California
Once you glimpse the brown-pants outfits up ahead, I think you'll agree they look far chicer
However, any noodle will work, just cook them according to the package instructions