Kim Collins, chief merchandising officer, says the retailer keeps dress codes in mind when placing orders.

WSJ: High Schools Have Dress Codes for Prom Gowns

Commonwealth gold medallist Kim Collins and US champion Bernard Williams will also push the British duo hard.

BBC: Chambers prepares for double

However, with Williams being replaced by Trell Kimmons, who finished third in the US trials, Chambers now has a strong chance of going one better than the silver he shared with Kim Collins after a dead heat in Spain two years ago, behind the Nigerian winner Olusoji Fasuba.

BBC: Ivory Williams ban boosts gold hopes for Dwain Chambers