Cocktail attire is a semi-formal dress code that balances elegance and comfort. For women: knee-length or midi dresses, dressy separates, or a polished jumpsuit with simple accessories and comfortable heels or flats. For men: a tailored suit or blazer with dress pants, a button-up shirt and dress shoes; ties are optional. Because October evenings can be crisp, consider layering with a light shawl or dress coat. Aim for polished, wedding-appropriate looks—no jeans, shorts, or athletic wear.

For more information, check out this link: What Is Cocktail Wedding Attire?