SM Entertainment's new female group Red Velvet is making a comeback really soon.

The four-member rookie group made their official debut back in August with the catchy single "Happiness" and since then, their new-found fans have been anxiously awaiting an update.

For their next single, Red Velvet will do a remake of the song "Be Natural," originally sung by first generation girl group and label mate S.E.S (Sea, Eugene, Shoo).

Judging by the teaser photo that was released to announce the comeback, the Red Velvet members Seulgi, Irene, Wendy, and Joy will look fierce and mature for the new song.

For their "Happiness" debut, the girls donned colorful cheerleading outfits that reflected their bright personalities.  For their upcoming comeback, Red Velvet will act serious.

Seulgi and Irene already showed off their sexy dance moves for "Be Natural" as they used the original in a video uploaded by SM Entertainment to their SMROOKIES site. Now, all four members will show their fans that they can do a mature concept, despite their initial cute and bubbly debut.

Red Velvet will release "Be Natural" on October 13.