One thing that surprised me was the silhouettes of Stephen Amell and Grant Gustin when wearing the other's costumes. Gustin is nearly Amell's height but has a slimmer build and trains for a leaner physique. Between the cut of the shoulders and the quiver poking over his shoulder, its not surprising that the Arrow costume was able to give the impression of a larger, more imposing character. What surprised me was how slender Amell looked in the Flash costume. He is not a small man and he trains for more muscular result than Gustin, yet he appeared very slim in the Flash costume.
John Wesley Shipp's Flash costume... Lets all remember it was designed the late 80's and leave it at that. :-)