Trickle Up &Trickle Down.

Trickle up and Trickle down in the fashion industry is a straightforward way to predict the fusion and diffusion of fashion by theory. 

Trickle up 

The trickle up is the newest of the fashion movement theories. In this theory the innovation is initiated from the streets and adopted from the lower income groups. The innovation eventually flows to upper- income groups. This means that designers and influencers then pick up on these styles made from the common public and then recreate the styles for all to see and wear. 

Trickle down 

Trickle-down effect is when fashion moves vertically from the upper classes to the lower classes the theory states that the style is first offered and adopted by the top strata of society then gradually becomes accepted and worn by the mid and bottom strata. This means that new styles made by designers and influences themselves have inspired the common public to go out a buy or recreate these styles of clothing.