Satin or silk bridesmaid dresses are often the most flattering, too, as they'll skim figures nicely, but chiffon and tulle will create the most movement
If you want to let them choose their own, thats cool, too
Gigi Hadid, Bradley Cooper, Lena Dunham and the Haim Sisters Hadid and Cooper were photographed leaving for the Garden together, with Hadid wearing a sparkling pink dress
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Tip: You may also bring the clothing to the tailors, dry-cleaning, or another place that provide professional ironing services
When in doubt, research the cultural and religious customs of the occasion or the individuals you will be engaging with, and adjust your attire accordingly