Sohyun is a South Korean singer from the group 4Minute (http://www.youtube.com/watch?v=DRSRpXPZVdM <<- Sohyun is the one with orange hair at the start) 
Her nickname is 'Kkwonsso' (her surname is Kwon)
Minah is a South Korean singer from the group Girl's Day (http://www.youtube.com/watch?v=akPDKYwIoVk Minah is the one who sings ''Don't you look into my eyes...)

Sohyun - 
Twitter: http://twitter.com/4M_kkwonsso
Instagram: http://instagram.com/kkwonsso_4m

Minah - 
Twitter: http://twitter.com/Girls_Day_Minah

I'm a fan of:
4Minute - http://www.youtube.com/watch?v=qsWl1--Niyg
Girl's Day - http://www.youtube.com/watch?v=akPDKYwIoVk