Supergirl suits

The Supergirl suit is a protective suit that Kara Danvers wears as the superheroine, Supergirl.

First suit
The first in Winn's line of suits included; a blue tank top with splits at the hips and red shorts with a golden strap around it, as well as, a red headband. The suit was immediately discarded by Kara, after she said she wouldn't even wear it to the beach, even more so to start "flying around" in it.

Second suit
A second suit was made for Kara after she refused to wear her first one. This suit was less revealing and a lot more appropriate for her to wear in public. It consisted of a blue shirt with red stitching and a red skirt with a gold strap, along with red Dr. Martens and socks. A cape was later added to the suit, as they realized it aided with aerodynamics, after Kara kept on crashing into nearby objects while flying.

Third suit
The third and current suit that is used by Kara is based on the same design as the second one but it has the House of El's coat of arms emblazoned on the chest. Moreover, tights have been added to the suit along with over the knee red boots. However, the cape always ended up in shreds, no matter what Winn and Kara attempted to do to repair it. Finally, though, James Olsen presented to Kara a present, Kal-El's blanket from when he arrived on Earth, to use as a cape, as it wouldn't fray.

The third suit was heavily ripped to shreds in Kara's first fight against Reign.

Upgrades
The suit along with the Superman suit were briefly upgraded when Winn Schott built shields to protect them from Metallo's Kryptonite blasts. The shield would be worn on the chest area.

History
After saving a plane from crashing, Kara decided that she wished to become a superhero like her cousin. She later revealed her identity to Winn Schott and he helped make a suit for her. Winn had a number of versions made for Kara before she finally settled down on her current one.

Functions

 * Cape: When the suit was first made, the suit did not include the cape, as Winn claimed capes were lame. However, a short time later when Kara went flying, and ended up crashing, Winn realized that capes aid in aerodynamics.
 * Advanced durability: It is unknown what materials the suit is made out of, however, the suit is just as durable as Kara; as bullets cannot penetrate it, even explosives from missiles, and highly concentrated bursts of energy from Reactron and Metallo respectively could not damage it.

Known users

 * Kara Danvers/Supergirl

Supergirl
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Season 4
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Season 2

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Behind the scenes

 * Supergirl's costume is the only Colleen Atwood design among the main line of DCTV heroes who has not changed as of Season 4. Both The Flash and Arrow original costumes had been changed by the time of their respective fourth seasons.
 * The original version of what would be the archetype for Supergirl's costume (albeit not Kara Zor-El's) was first featured in Superman vol. 1, #123 (1958) and was created by artist Dick Sprang. When Kara Zor-El debuted as Supergirl in Action Comics #252 (May, 1959), the outfit was slightly modified by artist Al Plastino, by changing the color of the skirt from red to blue. Although she has had several different costumes in the comics through the years, the original look has been the basis for most of them. Kara's costume on the show is also considered to be based on the original one.
 * Designer Colleen Atwood "urbanized" the classic Supergirl look as a reference to the "street-style action hero of today".
 * When Kara walks against the bullets in the pilot episode, she is seen using red Dr. Martens and socks, resembling the red shoelace boots used by Linda Danvers/Supergirl.
 * Kara's first failed costume attempt combines elements from several costumes, worn previously by the character in her appearances in the comics and other media. The red "hot-pants"/shorts were part of her outfit, that debuted in Adventure Comics vol. 1, #410 (1971), while her red headband was first seen in screen tests of the live-action Supergirl film (1984), that were not part of the final production version, before being included to her comic book costume in Supergirl vol. 2, #17 (1984). The first of Supergirl's costumes to include a bare midriff look was first seen in Superman: The Animated Series ' episode, "Little Girl Lost" (1998), later being incorporated into the comic books in Supergirl vol. 4, #51 (2000) and in a newer version in Superman/Batman vol. 1, #13 (2004).
 * Along with many other elements from the TV series, the suit was incorporated into the 2016 comic book title Supergirl, as suggested by artist Cameron Stewart.