OMG! Oh My Girl is here to dominate Cosmo's TikTok Challenge Challenge. Watch more TikTok Challenge Challenge https://www.youtube.com/watch?v=jqCxDk0qQvE&list=PLrx4fxhgMUOayMpvA8bt2rnieMzvJwftb
Hyojung, Mimi, YooA, Seunghee, Jiho, Binnie and Arin are such good dancers - who was your favorite?!
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