Stores have pushed waistcoat sales as England advanced to a World Cup semifinal clash against Croatia in Moscow tomorrow morning, with people taken by Southgate's style of wearing a vest without his suit jacket, AP reports.
"It's not the same if you play 90 minutes twice and 120 minutes twice, but I believe we've had ample time to recover and we're professional enough to know who needs what in terms of recovery", he said.
England looked drained of all inspiration and confidence and their manager Roy Hodgson quit on the spot.
However, he is also determined to maintain the shape that England have so far demonstrated during the tournament.
"So, we were at home and I went to get changed and I thought, "Hmmm, shall I wear those socks?'".
Southgate was a key player for England at Euro 96 but saw his penalty saved in the shoot-out at the end of the semi-final against Germany which saw them knocked out.
"Most of them weren't born when a lot of the stories we're talking about happened, so why as a coach would I try and put that at their door?"
"We've made several pieces of history". We know what's at stake and in such moments you forget any fatigue you may feel because this is maybe a once-in-a-lifetime opportunity.
Southgate, who was surprised by the vest craze, said he never considered himself a "fashion icon" but loved the enthusiasm from supporters across the UK.
"Football's coming home.I couldn't listen to it for 20 years, frankly", Southgate said. Everyone has been out on the streets celebrating what we've achieved and that is a great source of pride for us.
"They're getting blamed for what my generation and generations that followed did".
"But regardless of that, I think the football across the board has been really exciting, really entertaining, and the hosting of the tournament and the cities that have hosted it has been outstanding".