The news comes as the website, which offers clothes similar to those worn by celebrities but at lower prices, announced pre-tax profit increased 9% in the six months to 30 September to £4.4m.
Group revenues increased 47% to £96.5m driven by an 112% increase in overseas growth which offset slower growth in the UK, at 33%.
Marketing investment increased 4% to £4.1m in the six months to the end of September.
The company says it plans to launch some marketing activity over the coming months in order to “further increase brand awareness in the UK” and increase sales further.
It says the outlook for the second half is “cautiously optimistic”, adding the next six months should be “significantly ahead year on year, providing sales continue to grow in line with expectations”.