Niki and Gabi Sing Ariana Grande, Justin Bieber and Lady Gaga in a Game of Song Association | ELLE

They've deemed themselves polar opposites in looks, personalities, and fashion sense. But when it comes to #SongAssociation, Niki & Gabi have more in common than not. Tune in for our latest double feature as the pair call on the biggest pop stars in the world — Ari, the Biebs, and Gaga! — in a race against the clock. Watch the video to "hair tie," Niki & Gabi's latest music video, here: https://www.youtube.com/watch?v=Bgoi8lL1soY Join their 9 million YouTube fans: https://www.youtube.com/nikiandgabi SUBSCRIBE to ELLE http://bit.ly/SubscribeToELLE