from Wikipedia: The Tokyo Girls Collection (東京ガールズコレクション ), sometimes abbreviated as TGC, is a semiannual fashion festival launched in 2005. The fashion event showcases the seasons fashionable streetwear by domestic brands.  This one (2015) is the 21st Autumn Winter The performer's name is Naomi Watanabe, a comedian  the lip sync they really just want her to run up and down breathless don't they and omg they did the ARTPOP hand gesture, too!