Nu'est's Ren perfectly transformed into a girl and it has become a hot topic.

For the 400th episode special of "Music Core", there will be a special stage in which NU'EST's Ren, BTOB's MinHyuk, VIXX's Hongbin, A-JAX's Seungjin will transform into "Boy's Day" and perform Girl's Day hit song "Something".

And later a photo of Ren and Minah from backstage of "Music Core" was revealed. Ren with his milky white skin and thin figure which made many people who doesn't know about NU'EST surprised over the fact that he's boy crossdressing as a girl.

There will be more special stages to come so don't forget to tune in "Music Core" today at 3:50pm kst.