A Cube Entertainment's upcoming girl group, 'A Pink', has revealed its third member! On the morning of February 21st, A Cube Entertainment set up their own Twitter account and welcomed Oh Ha Young as the third member of A Pink. In the picture revealed, she's standing beside Son Na Eun and Park Chorong, who were both previously revealed through B2ST's music videos. The group is currently scheduled to debut by the end of March, and will be showing their debut preparations through a reality show. The girls are in the midst of finalizing their concept, and will be revealing the remaining four members through their Twitter. [caption id="attachment_223700" align="aligncenter" width="540" caption="Oh Ha Young, Son Na Eun, Park Cho Rong"][/caption] [caption id="attachment_223699" align="aligncenter" width="600" caption="Oh Ha Young, Son Na Eun, Park Cho Rong"][/caption] Source: Newsen, @acube2011