midi dress a line Bustier White This black dress is pure elegance and timeless charm AX Paris Women's Plum Square

If your clothing (and kids) are small, you could probably install two lower hangers as it is this will last Chlo and wont need to be changed as she grows

I'd avoid silk and jersey dresses if this look is supposed to be comparable to a suit

It usually fits evening receptions, city weddings, hotel cocktail hours, rooftop parties, chic restaurant weddings, galleries, candlelit dinners, and celebrations where the couple wants guests to look dressed-up but not gown-level formal

At its simplest, cocktail attire calls for a semi-formal suited outfit in a darker color either grey or navy with dress shoes and a tie, as Brian has styled here