The outfit is "Andromeda" from Laynie Link, as shown in this shot from Bettina Tizzy and also in her NPIRL blog post. You can buy it here.
Shoes are "Hexagon" shoes by Summer Seale, mentioned in this comment by Faerie Hax in Bettina's photo. You can buy them here.
Untouched shot. The background is seawater (using the presets described here)