Gucci's American mobile site accounts for 27% of traffic and 13% of online revenue

"Fashion brand Gucci is getting more mobile-friendly, with the optimisation of its website. The optimised site was already available in North America and is now offered in Europe, before being rolled out to the Asia Pacific region this Spring.
Since the initial US launch in December, conversion rates have increased by over 70 per cent and revenue grew almost four times year over year. The mobile site already accounts for 27 per cent of the total traffic and 13 per cent of total revenue."

Source:  Mobile Marketing, 25th February 2013