Nicola Sturgeon warned people in Glasgow and the west of Scotland not to travel to Edinburgh for Christmas shopping over the next three weeks.
The First Minister made the blunt call today as strict travel restrictions take effect across the country from 6pm.
Glasgow and 10 other local authority areas across the central belt have been placed at level four of lockdown - meaning that thousands of non-essential shops have been forced to close their doors just as the festive season approaches.
But the capital remains at level three, leaving businesses free to welcome shoppers into their stores.
The SNP leader today encouraged Scots living under level four to do their Christmas shopping online if possible - but warned against people from the west heading to the east coast.
Under new laws which take effect from today, those living in level four must not leave their council area unless they have a reasonable excuse such as travelling for work or school.
Asked if police would be enforcing the laws, Sturgeon said: "The police will enforce where they think it's appropriate. I think the majority of people will abide by the law.
"But if we can't maintain a tiered approach that allows us to have lower restrictions in areas with lower prevalence, then, as England is doing already, we would have to consider the same level of restrictions across the whole country.
"I'm being open with people - if we want to keep this targeted approach, travel restrictions are a key part of that and people should abide by them.
Sturgeon continued: "Remember - essential shops will remain open, so you don't to worry about essential food supplies. Shop online over the next three weeks if you can to get things that are not available from essential shops.
"If you live in Glasgow, as I do, do not travel to Edinburgh to go shopping, because not only will you be breaking the law you will be risking taking the virus from Glasgow to Edinburgh and putting people at Edinburgh at risk.
"That sounds blunt, but given what we face right now, I think it's important for me to blunt."
