@popularculture.hq: The viral clip of Kylie Jenner and Hailey Bieber dancing backstage was captured on Monday, March 21, 2016. It took place during the Los Angeles stop of Justin Bieber’s blockbuster Purpose World Tour at the Staples Center. Kylie and Hailey (then Hailey Baldwin) took over Snapchat that night, filming themselves singing and dancing enthusiastically to Bieber's hit song "Sorry" from the VIP backstage lounge. The star-studded concert was a massive family affair, also attended by Kim Kardashian and Kanye West. #KylieJenner #HaileyBieber #PurposeTour #JustinBieber #2016Nostalgia