Girl group Lovelyz has unveiled the first teaser for the four-member group.

Lovelyz released a teaser image of four members ahead of the release of their sixth mini album "Once Upon A Time" at midnight on May 9 through official SNS.

In the released image, Lovelyz shows off their maturity in an intense red-colored outfit. It's a 180-degree change from the innocent and elegant pure white they showed in their previous album.

Lovelyz had been well received by many fans, had been waiting for a comeback since the title track of "Lost N Found" released in November last year, signaling the release of the new album.

Lovelyz released their sixth mini album "Once Upon a Time" at 6 p.m. on May 20 and successfully finished thier comeback showcase.