Here are a few improved versions of your sentence, depending on the tone you want:
✨ Polished (formal)
These women are wearing elegant red evening gowns suitable for formal occasions, including wedding guest attire and mother-of-the-bride ensembles.
💄 More vivid / descriptive
These women are dressed in elegant red evening gowns, ideal for formal events such as weddings, including guest attire and mother-of-the-bride celebrations.
🖋️ More concise
The women are wearing elegant red evening gowns appropriate for formal events like weddings and mother-of-the-bride occasions.
If you want, I can also turn this into a product description, AI image prompt, or fashion catalog caption.