Looks like Rachel Bilson's new role as eyewear ambassador for Sunglass Hut is well under way with her star attendance at their new Fifth Avenue flagship store opening today. She chose a twisted-style teal blue RM by Roland Mouret mini dress teamed back with a double-wrap belt, black opaques and platform heels for the occasion. Her only piece of jewellery is in the way of her sparkly engagement ring, which gives just enough bling if you ask me. This is a simple style which works. Thoughts?