feminist theme and was compared to Beyoncé's 2011 single "Run the World (Girls)" for the same "women-powered" content; Eun-Young Jun in the book The Korean Wave: Korean Media Go Global (2013) noted its lyrics for depicting "sexually daring women" who are confident in their sexuality. Image Girls' Generation is known for reinventing their fashion styles and stage performances throughout their career. In their early years, the group performed in uniforms; with the debut single "Into the New World", they introduced themselves as high school students. In 2009, the group set the "colorful skinny jeans" fashion trend with "Gee", and later opted for a marine-inspired image on wearing uniforms and shorts that highlighted their legs with "Tell Me Your Wish (Genie)". In 2010, the group's image became more diverse: they used a cheerleader concept for "Oh!", while the performances of their 2010 single "Run Devil Run" was noted for conveying a darker theme, which was billed "Black SoShi". Later that year, the group transformed themselves to Bond Girls-inspired singers for the visual of "Hoot". In 2011, the group established a "heroine" image, with members choosing their own outfits, emphasizing each of the members' own tastes rather than performing in uniforms. For the performances of "I Got a Boy" (2013), the members opted for flat shoes instead of their signature high heels in order to perform the choreography correctly. Girls' Generation's visuals for their 2015 singles "Catch Me If You Can" and "You Think" were noted for intricate choreography moves with a more "powerful" and "sexy" image. Girls' Generation's image has often been regarded as "innocent", and their performances onstage are described as "youthful" and "colorful;" Ceejay Lee from Fem commented that Girls' Generation's outfits often reveal legs rather than "cleavages or derrières." Eun-Young Jung in the book The Korean Wave opined that the group's concepts fall into two main categories—"innocent, cutesy, happy" (early singles "Gee", "Genie", "Oh!") and "more mature, yet not overly sexy, feminine" (later singles "Run Devil Run" and "Hoot"). A writer for the Korean Culture and Information Service deemed the group's image as "sexy" and "girly" "goddesses that are hard to approach". John Seabrook from The New Yorker described Girls' Generation as "a group of preppy-looking young women in skinny trousers. When they wear hot pants, it's to display the gams, not the glutes." New York Magazine stated: "according to label executives and fans, [Girls' Generation's] appeal is