Lee Hyori recently turned into one of the "Bad Girls" for her grand return to K-pop, but she wasn't the only one who turned into a 'bad' girl as CL also made her solo debut as "The Baddest Female". 

Lee Hyori jokingly called out her hoobaes on Twitter sharing, "cl, this gijibae [play on CL's Korean song title - Bad Gijibae (Girl)], won't come down when this sunbae is trying to get #1~~ this bad gijibae~ and meanwhile, b2st these rascals revealed a pre-release these rascals~~", pointing to CL and B2ST who recently gave Lee Hyori a double whammy with their comeback on the same day as her competition.  

Lee Hyori now has to also watch out for B2ST who pre-released their track "Will You Be Okay" ahead of their comeback this July.

Which bad girl or bad boy among the idol stars do you think will have the most success this summer?

Source: Lee Hyori's Twitter