I ordered it for my daughter (38C) for a dance recital with a costume that had a low back. The fit was great and the strap across the back was snug. The clear halter strap has a tendency to roll and pinch the skin around her neck, but she takes off the halter strap and tucks it down the front of her shirt except when she is on stage.  We haven't tried the beige back strap or halter strap. I do wish there were clear shoulder straps instead of the halter because that would be more comfortable for her. I need to find out how to order extra straps because clear ones have a tendency to break at the worst times.