Claim: Red Velvet added a member in 2015.

Red Velvet -LRB- Hangul : 레드벨벳 -RRB- is a South Korean girl group formed by S.M. Entertainment . The group debuted on August 1 , 2014 , with their digital single `` Happiness '' and with four members : Irene , Seulgi , Wendy and Joy . In March 2015 , fifth member Yeri was added to the group .   Since their debut , Red Velvet has experienced notable success and recognition . Their first EP , Ice Cream Cake which was released in March 2015 , topped the Gaon Album Chart on the 12th week of 2015 and in September 2015 , the group 's first full-length album , The Red , also topped the Gaon Album Chart and the Billboard World Albums Chart . Red Velvet has received several music awards , including two awards for choreography ; Best Dance -- Female and Best Dance Performance -- Female Group , as well as three new artist awards and multiple popularity awards . Red Velvet members have also made television appearances ; Irene as a host of Music Bank , Yeri as a host of Show ! Music Core , and Joy on the fourth season of variety show We Got Married .