"To design these costumes" means to create or come up with the ideas and plans for how these outfits will look, including their style, colors, and overall appearance. Full definition
Seriously whoever designs these costumes for little girls need some serious talking to. (mommyniri.com)
Now imagine having the job of designing the costumes that had to hold up to such an epic action sequence while making them look cool and authentic at the same time. (space.ca)
The designer has since entered into a number of high profile collaborations, including outfitting singer Florence Welch for her 2011 tour, and has also designed the costumes for the 2013 release of the film Rush. (businessoffashion.com)