Today MAMAMOO's sister group CIRCUS, yet to debut released a summer feeling song titled 'Loving U'.

SEE ALSO: WA Entertainment confirm of a new girl group to debut this year called CIRCUS

WA Entertainment home to MAMAMOO announced of CIRCUS's upcoming debut this year as the sister group to MAMAMOO. Though none of the girls names are known just yet WA Entertainment released a summer song that showed all four membrs enjoying the weather from filming in Hawaii. The girls acted cute in the MV and are proving their vocal and rapping skills. Go check out 'Loving U' and expect their debut this year!