The unveiling of the new shirt, which took place in Dortmund’s Westfalenpark, took up 10,764 square feet and used 80,645 flowers – one for every seat in their stadium.
The mixture of marigolds and black, pink and grey petunias is available for all to enjoy until next week, when fans will get a chance to take one of the flowers home.
Dortmund say each flower will be a good luck charm for the team, and will help them in their quest for silverware next term.