Aside from the comics, Smallville's Supergirl is one of my favorite versions of the character (second being the one from the Superman, Justice League and Justice League Unlimited animated series). She was confident, independent, fearless, intelligent, powerful and a tad bit reckless and not to mention at first she was a little too trusting with the wrong people (i.e. Lex Luthor, those beauty pageant girls, etc.).
Despite having superpowers, I feel like this version of Kara Kent would still workout and train which is why I was inspired to create a fitness look for her. I kept this look to the primary colors she was nearly always wearing by pairing a red tank top with blue yoga pants.