Name: Gasai Yuno
Series: Mirai Nikki
Version: Black Dress
Time spent: 3 days
Debuted: Halloween in Cosplay 2013
That dress is quite easy to make but the fabric I get was very difficult to sew and more than the 80% of the dress was hand sewed. They were 3 days of pain. Obviously, I use an old corset with cups as base because the style was very similar to the top of Yuno dress and folded with fabric and decorations. Then, I ended sewing the skirt and more details.
You can read a review about the lenses I used for this cosplay Here.