Obviously I am too decrepit to make sensible suggestions for dd, so would appreciate some advice! It's for a smart lunch following an event. Dd is a jeans and sweatshirt girl (black for preference) and hates looking in shops. Tall, size 8. No flowers, frills, sparkles allowed. Small print in dark colours might be ok. Likes to show her collarbone, so no high necks, but no low necks either. High street prices. Any help much appreciated!