Arcadia’s Topshop and Topman are moving into Sin City with the launch of a 20,000 sq ft flagship store in Fashion Show Mall in Las Vegas.

The store, due to open next March, will be the chain’s third US flagship, following openings in New York and Chicago. The Vegas store is being created by merging four individual stores to create a single level that will stock both menswear and womenswear. Arcadia said it will “showcase the best the two brands have to offer”.

Both stores have e-commerce sites in the US with attracting a million unique users every week and attracting an average of 450,000 users. Both feature blogs with news and events, while Topshop’s Inside-Out blog, written by its in-house team, also features street style look, fashion and brands news as well as music, art and film reviews.

Topshop has 315 UK stores and 137 international franchises across 37 countries, while Topman has 215 stores and 86 international franchises. Its first US store opened in New York in 2009.