Starship described Sistar as a girl group with both talent and style, creating a new cultural code with unique music, choreography, and fashion.

[6] Starship added that they are also a versatile group that can digest a variety of genres, from ballads to hip-hop, and will emerge as a style icon for those in their teens and twenties.

[13] The group returned on 25 August with their second single, "Shady Girl", the music video featured Kim Hee-chul of Super Junior.

On 14 September, Sistar was invited to perform at Japan's "Hallyu Music Festival" as the only Korean girl group present.

The EP contained the title track, "Loving U", produced by Duble Sidekick, one new song "Holiday" and remixes of the groups' past hits.

[30] Their recording label, Starship Entertainment, announced on 16 May 2013, that Sistar will return mid-June, with another confirmation on 2 June, stating that they will be making their comeback with a second full album.

[31] On 26 October, Sistar represented South Korea at ABU TV Song Festival 2013 in Hanoi, Vietnam, performing "Give It to Me".

[citation needed] On 5 June 2014, Sistar's label, Starship Entertainment, told Newsen that the group was working on a new album and would come back in the beginning of July.

[35] EP contained two new songs "I Swear" and "Hold on Tight" and four remixes for singles "Loving U", "Gone Not Around Any Longer", "Give It to Me" and "Touch My Body".

[45] On 22 July 2022, the members of Sistar reunited to perform several of their hit songs on the final episode of You Hee-yeol's Sketchbook as a way to show support for Hyolyn's then-recent comeback.

[47] Later that year, Sistar was selected in October as the promotional ambassador's for the Thailand audition program 'Teen Superstar TV Show'[48] and in December for the Korea Youth Federation, wherein, as public relations ambassadors, Sistar has supported group activities and events organized for one year by the federation locally and internationally.

[49] In November 2011, Sistar was appointed by the Korea Energy Foundation as their public relations ambassador for 'Energy Sharing' and welfare issues.

[56] According to Asian Economy, Sistar emerged as the biggest blue chip in the advertising industry in the first half of the year, and it is unusual for top brands at home and abroad to send love calls to a rookie group that has only been debuting for three weeks.

In the case of Sistar, they have been attracting attention from the advertising world by shooting pictorials for FUBU and Shu Uemura even before their debut.

[57] In October 2010, Sistar was chosen as the face of Korea's pioneering boardwear brand, 'STL', for the 2010 F/W (fall, winter) season advertising campaign.

[58] Later in December 2010, they joined forces with Yuna Kim and hip-hop duo Electroboyz to collaborate on a video pictorial and a captivating song titled "Super Girl".

This track served as the promotional background music for Samsung Electronics' highly-anticipated tablet PC Galaxy Tab.

[59] In February 2012, fashion brand AIOLI revealed a new photoshoot featuring the members of Sistar in their new collection, "Plastic Islands."

[60] In December 2014, Sistar promoted a newly launched training wear brand 'BCUZ', which was modeled after them by a small and medium-sized clothing manufacturing company in Korea.

[61] In addition, Sistar took part as ambassadors for sports wear brands Nepa for their 'Izenbuck' collection[62] and skecher pants from LS Network which were featured through the music video of their 2015 lead single "Shake It".

Sistar's being featured in some of these advertisements, which are considered the exclusive domain of top stars, has proven the group's elevated status, making them the envy of the industry.

They not only participated in the unveiling event of Samsung Galaxy S3 Long Term Evolution (LTE),[72] but also lent their support to the cosmetic brand "Holika" by Emprani.

[73] Furthermore, their influence extended to diverse sectors such as clothing, automobiles, beverages, cosmetics, food, chocolate bars, and promoting open markets and waterparks, as they served as advertising models for Longevity Apparel's Clyde,[74] Ssangyong Motor's Korando C,[75] Lotte Chilsung Beverage's Let's Be Cafe Time,[76] Coca-Cola's Mate Tea of the Sun,[77] Samyang Genex's About Me collection,[78] Ottogi's Rice Set,[79] Mars Korea's Sneakers,[citation needed] SK Planet's 11th Street Open Market,[80] and Daemyung Resort's Ocean World.

[86] In December 2014, MBN Star Popular Culture conducted a survey amongst 144 individuals from soloists and members of South Korean groups to determine who was the "Best Singer of the Year", to which Sistar ranked second alongside Seo Taiji, Apink, and Beast, all receiving 10 votes, respectively.

[88] In a survey published by The Dong-a Ilbo in 2016, Sistar were ranked ninth in a poll of the best girl groups in the past 20 years by both the public and music experts.