"It's comfortable. Cool. And undetectable by radar. It absolutely screams summer!" — Gaston LeMode[source]
The Summer All The Time Collection was produced by amateur fashion designers Phineas and Ferb, with help from Isabella and the Fireside Girls. Gaston Le Mode appropriated the designs to use in his fashion show. The clothes were modeled after Phineas's and Ferb's signature look. Candace was asked by Gaston to wear it, but she refused due to Phineas and Ferb's influence in making it. Gaston's models wore it down the runway, which set off a craze throughout the Googolplex Mall, with everyone wanting to wear it. Stacy wore one that was modeled after Ferb's usual outfit, except for the shoes ("Run Away Runway").
The image gallery for the clothing line's creation may be viewed here.
The image gallery for Summer All The Time Collection may be viewed here.
In "Last Train to Bustville", Candace saw some at the Summit Store and wondered why they were selling them. Linda mistook the clothes and the Phineas and Ferb balloons for the boys while wearing her near-view glasses.