Models present creations during the Bora Aksu catwalk show during London Fashion Week in London, Britain February 17, 2017. REUTERS/Neil Hall - RTSZ6AY

A model presents a creation at the Ryan Lo catwalk show during London Fashion Week in London, Britain February 18, 2017. REUTERS/Neil Hall - RTSZ9EQ

Models present creations at the Jasper Conran catwalk show during London Fashion Week in London, Britain February 18, 2017. REUTERS/Neil Hall - RTSZ9FR

A model presents a creation at the Topshop Unique catwalk show during London Fashion Week in London, Britain February 19, 2017. REUTERS/Neil Hall - RTSZDTD

A model poses backstage at the Topshop Unique catwalk show during London Fashion Week in London, Britain February 19, 2017. REUTERS/Neil Hall - RTSZDZP

A model presents a creation at the Sophia Webster presentation during London Fashion Week in London, Britain February 20, 2017. REUTERS/Neil Hall - RTSZHMF

Models present creations at the Christopher Kane catwalk show during London Fashion Week in London, Britain February 20, 2017. REUTERS/Neil Hall - RTSZIMB

A model is groomed backstage at the Topshop Unique catwalk show during London Fashion Week in London, Britain February 19, 2017. REUTERS/Neil Hall TPX IMAGES OF THE DAY - RTSZDX0

A model presents a creation at the Mulberry catwalk show during London Fashion Week in London, Britain February 19, 2017. REUTERS/Neil Hall - RTSZE33

A model presents a creation at the Christopher Kane catwalk show during London Fashion Week in London, Britain February 20, 2017. REUTERS/Neil Hall - RTSZIK6

A model presents a creation at the Marques' Almeida catwalk show during London Fashion Week in London, Britain February 21, 2017. REUTERS/Neil Hall - RTSZN37

Models present creations during the Bora Aksu catwalk show during London Fashion Week in London, Britain February 17, 2017. REUTERS/Neil Hall - RTSZ6AA

Models present creations at the Central St Martin's catwalk show during London Fashion Week in London, Britain February 17, 2017. REUTERS/Neil Hall - RTSZ7RS

A model presents a creation at the Ryan Lo catwalk show during London Fashion Week in London, Britain February 18, 2017. REUTERS/Neil Hall - RTSZ9EK

A model is groomed before the Jasper Conran catwalk show during London Fashion Week in London, Britain February 18, 2017. REUTERS/Neil Hall - RTSZ9FD

A model is groomed backstage of the Bora Aksu catwalk show during London Fashion Week in London, Britain February 17, 2017. REUTERS/Neil Hall TPX IMAGES OF THE DAY - RTSZ69Y

A model presents a creation at the House of Holland catwalk show during London Fashion Week in London, Britain February 18, 2017. REUTERS/Neil Hall - RTSZB9W

A model presents a creation at the House of Holland catwalk show during London Fashion Week in London, Britain February 18, 2017. REUTERS/Neil Hall - RTSZBAW

Models present creations at the Anya Hindmarch catwalk show during London Fashion Week in London, Britain February 19, 2017. REUTERS/Neil Hall - RTSZCSB

A model is groomed backstage at the Topshop Unique catwalk show during London Fashion Week in London, Britain February 19, 2017. REUTERS/Neil Hall - RTSZDX2

Image used for illustrative purpose. A model presents a creation at the Mulberry catwalk show during London Fashion Week in London, Britain February 19, 2017.

A model presents a creation at the Burberry catwalk show during London Fashion Week in London, Britain February 20, 2017. REUTERS/Neil Hall - RTSZJCR

Models pose backstage of the Isa Arfen presentation during London Fashion Week in London, Britain February 21, 2017. REUTERS/Neil Hall TPX IMAGES OF THE DAY - RTSZMX0

Models present creations at the Emilio de la Morena catwalk show during London Fashion Week in London, Britain February 21, 2017. REUTERS/Neil Hall - RTSZN1Z

Models present creations at the Marques' Almeida catwalk show during London Fashion Week in London, Britain February 21, 2017. REUTERS/Neil Hall - RTSZN4F

Models present creations at the Ports 1961 catwalk show during London Fashion Week in London, Britain February 18, 2017. REUTERS/Neil Hall - RTSZA6T

Models present creations at the Topshop Unique catwalk show during London Fashion Week in London, Britain February 19, 2017. REUTERS/Neil Hall - RTSZDS8

Models present creations at the Mulberry catwalk show during London Fashion Week in London, Britain February 19, 2017. REUTERS/Neil Hall - RTSZE2A

Models present creations at the Isa Arfen presentation during London Fashion Week in London, Britain February 21, 2017. REUTERS/Neil Hall - RTSZMYY