Though most of her success as a recording artist has been in Asia, she has also gained popularity in Western countries due in part to Internet videos which have gone viral.

[11] In April 2011 Kyary participated in the charity event "One Snap for Love" to benefit victims of the 2011 Tōhoku earthquake and tsunami.

[12] In July, she released her first promo single, "PonPonPon", citing Gwen Stefani, Katy Perry and Lady Gaga as inspirations at that time.

Along with the announcement of her second single back in February, it was revealed that she was planning to hold her first nationwide tour in June of that year, as well as launching an official fan club.

[37] During this period, she also appeared in the Swedish newspaper Svenska Dagbladet[38] and was interviewed on the British radio station Monocle 24.

[40] A month-long exhibition in March 2013 titled "Kyary Pamyu Pamuseum" was held in Tokyo's Roppongi Hills complex, showcasing all costumes from her music videos and live performances.

[41][42][43] In April, a deal for American distribution was reached with Sire Records, and "Fashion Monster" was re-released in the United States.

[46] In America, Paper featured her in its July issue,[47] and she received her largest American exposure to date in a lengthy profile in The Wall Street Journal the same month.

[58] The world tour visited the United States, Canada, Australia, England, France, Germany, Taiwan, Thailand, Singapore, Hong Kong, and Kyary's native Japan, lasting from February until November.

She was interviewed by or was the focus of articles in internationally renowned publications such as The Guardian, Time Out London, Sydney Morning Herald, and VICE.

[63][64][65] In May 2014, she appeared in the British fashion magazine i-D.[66] In July 2014, Vogue premiered Kyary's first English-language song, "Ring A Bell," in the United States.

In March, she announced that her upcoming single "Family Party" will be used as an ending theme for the movie Crayon Shin-chan: Serious Battle!

Also in May, Dazed & Confused announced that Kyary was working with international musicians Sophie and Yelle on new upcoming music.

The Hall tour consisted of 17 shows in 13 cities, visiting Saitama, Tokyo, Miyagi, Matsudo, Hokkaido, Tochigi, Niigata, Ishikawa, Yamanashi, Chiba, Hiroshima, Kagawa, and Aichi, and lasting from July 27 until September 22.

[71][72] In January 2015, she was mentioned by The Hollywood Reporter as one of the "major recent sellers" for Warner Music Group alongside artists including Coldplay and Ed Sheeran.

[78] In November 2015, Kyary was featured prominently in advertising for "The World Goes Pop" exhibition at the Tate Modern national art gallery in London.

The world tour visited Singapore, London, Sydney, Melbourne, San Francisco, New York City, Taipei, and Tokyo.

The following year, she performed at six international concerts in London, Cologne, Berlin, New York, San Francisco, and Los Angeles as The Spooky Obakeyashiki World Tour.

[86] On May 10, she released an independent digital single "Kimi ga Iine Kuretara" as a tie-up song to the Japanese drama Mukai no Bazuru Kazoku.

[88] Kyary released a digital single "Kamaitachi" on April 24, 2020 with its accompanying music video premiering on YouTube the same day.

The brand was backed by a crowdfunding campaign in February 2020 for Kyary who wanted to turn her favourite scent, fragrant olive, into a fragrance.

[91] October 18, 2020, she released, exclusively at her store, a limited edition DVD / Blu-ray of her 2 performances of "Otonokuni Live Tour 2019", inspired on Kabuki theatre.

Live footage carefully selected from the performance on the day of the two-part system is not only delivered in normal 2D (GYAO!

[98] On January 8, 2022 Kyary released a digital single "Maybe Baby", used as opening theme of Ninjala anime series.

[102] On March 21, 2023, Kyary announced on social media that she married actor and Terrace House studio commentator Shono Hayama [ja] on an undisclosed date.

[110] She has cited American singers Gwen Stefani, Katy Perry, and Lady Gaga as her inspirations in both music and fashion.

While being interviewed on TV Asahi's Music Station, she was wearing an oversized ribbon on her head, which blocked Japanese boy band Kanjani8 from being seen on camera, angering fans of Kanjani8 by her outrageous fashion style.

During an interview with The Fader, Kyary was asked if she meant to make music outside of Asia, where she responded; "At first, I didn't think about global markets at all.

"[112] Many critics and publications noted the increase in popularity of Japanese pop culture outside Japan, such as its fashion and animation, and Kyary's role as its global ambassador.

Her single "Furisodation" generated minor controversy in Japan, where a citizens' group believed the video encouraged alcohol and smoking, a claim which her label denied.