Sistar

Sistar (???, also stylized as SI?, SiSTAR) is a four-member South Korean girl group under the management of Starship Entertainment. The group consists of leader Hyorin (??), Bora (??), Soyu (??) and Dasom (??). On June 3, 2010, they released their debut single "Push Push (????)" and made their debut on Korean Broadcasting System (KBS) Music Bank. On August 25, they released their second single "Shady Girl (???)" and followed up with "How Dare You (????)" on November 29. On May 5, 2011, Hyorin and Bora made their debut in a sub-group called SISTAR19 (???19) on M! Countdown with "Ma Boy (???)".

The group made their return with their first official album titled SO COOL on August 9.

Pre-Debut

Hyorin had auditioned twice for JYP Entertainment beforehand and was accepted on the second try. She was initially planned to debut in a quintet group along with Secret's Jieun , miss A's Min and EXID's Yuzi. Plans, however, fell and she was dropped from the label. She later auditioned for Starship and was accepted. Soyu auditioned for Starship, singing a cover of Navi's "On The Road". SISTAR made their first appearance through a CECI magazine photo in England shoot on March 19, 2010 for the clothing company FUBU.

2010: Debut, "Push Push", "Shady Girl", and "How Dare You"

The MV teaser for their debut song "Push Push (????)" was released on June 1, 2010. Two days later, on June 3, 2010, Starship released the full music video for "Push Push (????)". Sistar had their debut performance at Music Bank on June 4. The group wrapped up promotions for their "Push Push (????)" on July 26.

The group released their 2nd single "Shady Girl (???)" on August 25, 2010. The MV teaser was released on August 24, 2010 and the full music video was released a day later. The MV also features Super Junior's member Kim Heechul. At this time SISTAR were beginning to do international advances, performing in other Asian countries. On September 14, SISTAR were invited to perform in Japan's "Hallyu Music Festival" as the only Korean girl group present. On October 10, SISTAR also made their debut in Thailand, performing their hit songs "Push Push (????)" and "Shady Girl (???)" on Thailand's "Teen Superstar" show.

The teaser for "How Dare You (????)" was released on November 23, with the full music video planned to be released one day after. However, the border skirmish between North and South Korea at Yeonpyeong caused the music video to be pushed back almost a week. The full music video was finally released on December 2. "How Dare You (????)" swept the music charts and was ranked at #1 on various music sites such as MelOn, Mnet, Soribada, Bugs, Monkey3, and Daum Music. On December 9, 2010, the group attended the Golden Disk Awards, being awarded with Newcomer Award. On December 17, 2010, SISTAR won the Music Bank award for their song "How Dare You (????)".

2011: SISTAR19 and SO COOL

SISTAR wrapped up their final rounds of "How Dare You (????)" promotions in mid-January. On April 27, it was announced that SISTAR will be debuting a sub-unit, SISTAR19 (???19) with members Hyorin and Bora. The teaser for their debut song "Ma Boy (???)" was released on April 29, 2011, and the full music video on May 2, 2011. They released their digital single, titled "Ma Boy (???)", on May 3. SISTAR19 had their debut performance on M! Countdown on May 5, 2011.

On July 31, it was reported that SISTAR would be returning with their first official album on August 9th, titled SO COOL. In addition to the news, it was also reported that member Soyu lost 8kg (roughly 17.6 lbs.) in preparation for their comeback. Starship Entertainment stated that "fans can look forward to a more charismatic side of SISTAR". On September 11, they won on Inkigayo beating out Davichi (?Dont Say Goodbye?), Infinite (?Be Mine Remix?), Dal?Shabet (?Bling Bling?), Nine Muses (?Figaro?), G.NA (?Top Girl?) and CS Numbers (?Crying With My Heart?) in the 'Take 7' nominees.

2012: Alone

In March, member Soyu tweeted about their eventual return to the music scene in approximately 8 months after the release of SO COOL. Starship representatives have stated that the group's comeback is "very different from what they've done before".

They will make a comeback with a mini album containing six songs, titled Alone. The title track, "??? (Alone)", is described to have a strong sound, as Brave Brothers, who has produced each of their songs since their debut, has reported to "try out a new style and sound specifically for the group". They also have two new songs added, "Lead Me" and "No Mercy".

SISTAR were planned to make their comeback on April 12, following the release of teasers prior. Their music video for "??? (Alone)" was released on April 11 on Loen Entertainment's and Starship Entertainment's YouTube Channels. SISTAR's promotion for their first mini album (EP), Alone started on April 12 with a special comeback stage on Mnet's M!Countdown where they performed two songs from the album; "Lead Me" and the title track "??? (Alone)". They then performed the two songs again on KBS's Music Bank the following day and on SBS's Show! Music Core, and on SBS's Music Trend.

Members

Birth Name: Kim Hyo Jung (??? )
Stage Name: Hyorin / Hyolyn (??)
Position: Leader, Main Vocalist, Visual
Date of Birth: January 11, 1991
Blood Type: B
Specialty: Vocal and Dance
Height: 163 cm
Weight: 45 kg
Hobbies: Lab skills excellent, versatile entertainer

Birth Name: Yoon Bo Ra
Stage Name: Bora (? ?)
Position: Rapper, Vocalist
Date of Birth: January 30, 1990
Specialty: Vocal/Rap/Dance
Height: 165 cm
Weight: 46 kg
Hobbies: Exercises, Dance
Education: Myongji University Musical Department

Birth Name: Kang Ji Hyun (???)
Stage Name: Soyu (? ?)
Position: Sub Vocalist
Date of Birth: February 12, 1992
Blood Type: O
Specialty: Vocal
Nickname: Little Lee Mi Yeon
Height: 170 cm

Birth Name: Kim Da Som
Stage Name: Dasom (? ?)
Position: Maknae, Vocalist
Date of Birth: May 6, 1993
Blood Type: A
Specialty: Vocal
Height: 167 cm
Weight: 46 kg