They are cool and they introduce architectural design practices into fashion.
Some examples:This dress by Amila Hrustic via Foundshit.
These hats by House of Architects found via Today And Tomorrow.
This dress by 132 5. Issey Miyake that expands from a two-dimensional folded piece of cloth into a 3D garment, found via Dezeen.
This photo by Mario Sorrenti found in Touchpuppet showing Raquel Zimmermann wearing this Jean Paul Gaultier Fall 2009 Haute Couture creation (big thanks to Sandman who identified it for me so I could link it).
This shoe by Andreia Chaves called "The Invisible Shoe" in a photo by Fernando Biagioni found in Yatzer.
This wolf shirt that, part of THE T-SHIRT ISSUE project by Mashallah Design and Linda Kostowski.
This shoe called Lo Res by United Nude, a brand that is co-designed by Dutch architect Rem D. Koolhaas as previously mentioned in this post.
This collaboration between fashion brand Fendi and architectural studio Aranda\Lasch at Design Miami titled Modern Primitives, found via this post by youstrikemefancy.
This dress presented by Irina Shaposhnikova from her collection called Crystallographica, in a backstage photo by Sonny Vandevelde found via Today and Tomorrow.
The first pic of this post is a detail from this collection.