GUCCI GG Monogram Sheer Cami Dress Size L Length: Approximately 80-85cm, adjustable with shoulder straps Width (underarm to underarm): Approximately 70cm Very stretchy This was part of a lingerie line and came as a set with other items. It is authentic. It's meant to be worn over undergarments to show them off, or over a T-shirt and jeans. I've also seen people wear it over swimwear. Of course, it can also be worn as a slip. I bought this quite a while ago (around 2000, when Tom Ford was the designer), so it's vintage? It's been unworn until I first wore it two years ago. I've worn it about twice, so there's no noticeable damage. I bought a size L because I intended to wear it over clothes (I usually wear M or size 38), but I remember that the difference between M and L wasn't that significant.