These X-Men Days of Future Past costume designs done by concept artist Phillip Boutte Jr (Man of Steel, Captain America: The First Avenger, Inception, Star Trek) are pretty awesome in all their X-variations. The only noticeable fail: the polyester disasters for the young Magneto and Xavier. But for any one who has watched American Hustle, the whole decade was pretty much a disaster for men fashions.
You can find more of Boutte’s designs for other movies at his website.