black tie optional wedding guest dress What to Wear to a What Is “Black Tie Optional”?
Description
Underwear Solution: No bra needed due to the boning and cowl neckline but a backless bra can be fitted under if preferred

American Songwriter

Whether you'll be comfortable in a knee-length off the shoulder mother-of-the-bride dress, one of our long sleeve, beaded, v-neck, fitted, knee-length trendy mother-of-the-bride dresses, or a mid-length modern mother-of-the-bride dress, we'll have something in a style and color that you'll absolutely love
Open deep 'U' shaped back

They were very modest with only a small V neck exposing some skin while covering up the collarbones
