Supergirl is an American superhero action-adventure drama television series developed by Ali Adler, Greg Berlanti and Andrew Kreisberg (the latter two having previously created Arrow and The Flash) that originally aired on CBS and premiered on October 26, 2015.
https://en.wikipedia.org/wiki/Supergirl_(U.S._TV_series)
Surviving Krypton. Kara Zor-El is the daughter of Superman's uncle Zor-El and his wife Alura. Kara is actually older than Kal-El (Superman); she was a teenager when he was a baby. When Krypton was attacked by Brainiac, he took Kandor with him, while Kara and her parents remained in Argo.
http://dc.wikia.com/wiki/Kara_Zor-El_(New_Earth)
Alexandra Alex Danvers (born 1989) is a top agent of the D.E.O., the daughter of Jeremiah Danvers and Eliza Danvers, the adoptive sister of Kara Danvers and the girlfriend of Maggie Sawyer. Alex Danvers was born in 1989 in Midvale to her parents; scientist Jeremiah and Eliza Danvers. Since early childhood, she displayed a gifted intellect and attitude towards science, as a teenager she is enrolled in the Midvale Junior High School obtaining remarkable results.
http://arrow.wikia.com/wiki/Alex_Danvers
CBS has found its Supergirl. Melissa Benoist has been cast as Kara Zor-El, aka Supergirl, for the superhero series of the same name that’s in the works for this fall. Benoist – last seen in the Oscar-nominated movie Whiplash and on Glee – will play a denizen of Krypton who escaped amid its destruction years ago.
http://people.com/tv/who-is-the-new-supergirl-on-cbs/
For other uses, see Supergirl (disambiguation). Supergirl is a fictional superheroine appearing in American comic books published by DC Comics. Supergirl was created to be a female counterpart to DC's popular hero Superman. The character was created by writer Otto Binder and designed by artist Al Plastino in 1959.
https://en.wikipedia.org/wiki/Supergirl
At the D.E.O., Kara suggests the impostor is a clone. Kara later notices Cat being nice to her because she was dating Adam. During her date with Adam, Kara sees a news report of a stranded tram, prompting her to bail. Atop the tram, she was confronted by Bizarro, who ignores her questions and attacks her.
http://arrow.wikia.com/wiki/Kara_Danvers
Kara hears a robbery happening nearby, showing up as Supergirl, and talking the robber out of it, with James snapping a photo of the event. She is later informed by Winn, that an adrenaline rush will restore her powers. After James almost falls down an elevator shaft , the moment allows for Kara's powers to return.
http://arrow.wikia.com/wiki/Kara_Danvers
Kara-Zor-El, also known as Supergirl and Linda Lang, is a Kryptonian superhero based in Metropolis. She is the cousin of Superman, Lana Lang's foster niece and a member of the Justice League of America (New Earth)
http://dc.wikia.com/wiki/Kara_Zor-El_(New_Earth)
It is based on the DC Comics character Supergirl (Kara Zor-El), created by Otto Binder and Al Plastino, and stars Melissa Benoist in the title role. Supergirl is a costumed superheroine who is the cousin to Superman and one of the last surviving Kryptonians. The series was officially picked up on May 6, 2015, after receiving a series commitment in September 2014, and received a full season order on November 30, 2015.
https://en.wikipedia.org/wiki/Supergirl_(U.S._TV_series)
Kara Zor-El (born 1966) is the daughter of the scientist Zor-El and his wife Alura. Kara was sent to Earth from the dying planet of Krypton to protect her younger cousin Kal-El.
http://arrow.wikia.com/wiki/Kara_Danvers
who is supergirl
Kara Zor-El is a super girl. Supergirl is Kara-Zor-El.    Kara-Zor-El is supergirl.  Kara Zor-El is the Supergirl.