On March 12, makeup & skincare brand 'Etude House' revealed a surprise video teasing the announcement of their newest endorsement models.

SEE ALSO: Seoul Philharmonic Orchestra reveals dramatic MV for Red Velvet's 'Psycho'

The simple video opens up a door leading to the room with 'Etude House's next 'muses' - the silhouette of a 5-member girl group. The girl group's identity will be revealed in 2 days, on March 14.

Many fans are already suspecting that the girl group is none other than Red Velvet.�Do you agree? Stay tuned to find out for sure.