A fashion retail expert told ITV News that a fire at the large Asos distribution centre near Barnsley could cause "chaos" further down the supply chain.
As well as existing stock, taking their website down will mean no further sales are made.
"Not selling anything thing means there will be a backlog of items waiting to come into the warehouse," said the insider, who works for a company that supplies Asos.
"This can cause chaos with smaller suppliers who don’t necessarily have the space to hold onto orders.
"Smaller factories will be manufacturing Autumn/Winter collections now and it may be prohibitively expensive to rush certain summer collections back into production."
More top news
Merrill Lynch has been fined £34.5 million for failing to report 68.5 million transactions, the Financial Conduct Authority has said.
Most people back a change in the law to ban unpaid internships that last for more than four weeks, a new poll suggests.
The favourites to win the Venice marathon finished behind a local runner - after they were led along the wrong route by a motorcycle guide.