The beautiful gown worn by Alicia Keys in the advert campaign for Givenchy's perfume Dahlia Divin is described as being a Golden lamé gown, lamé being a term for clothing or material in which golden or silver threads run to give it the sheen and colour and reflective ability that it has.
From the advertisement of Givenchy's Dahlia Divin perfume,
scanned from June 2014 issue of Stylist magazine.
I love the details on this gown, they make me think of elaborate steam punk imagery that uses nuts and bolts and other metal fastenings, steam powered contraptions, strange welded together bits of metal and so on. But then they also have a more of a solar punk feel. Solar punk is a recent genre that I've been thinking about and looking into, it is quite futuristic and often involves the use of solar energies as a power source, I imagine it would also involve the use of any green renewable energy sources, sun or star burst motif imagery, (thank you Disney's Tangled).
These coils and things that look like bolts and screw heads look amazing. It is mostly bead work or large bead/gem work as you can see from the borrowed imagery: