Uniqlo’s domestic same store sales increased by 4.1 per cent year on year in May.

It attributed the sales increase to rising seasonal temperatures which buoyed sales of summer garments throughout the month.

Total sales included online sales which increased by 7.4 per cent.

Uniqlo has boosted its marketing by launching an smartphone app UTme! allowing consumers to design their own clothes. Users can take photo, type text or draw a design, then upload to the Uniqlo website.