F(x) Profile

                     "F(x)" (SME)

SM first released a teaser preview of the group via Youtube on August 24, 2009.

                     Name: Song Qian (Victoria)
                     Birthday: February 2, 1987 (25)
                     Position: Leader, Main Dancer, Vocalist

                     Name: Liu Amber
                     Birthday: September 18, 1992 (20)
                     Position: Main Rapper, Vocalist

                     Name: Park Sunyoung (Luna)
                     Birthday: August 12, 1993 (19)
                     Position: Main Vocalist, Lead Dancer

                     Name: Choi Jinri (Sulli)
                     Birthday: March 29, 1994 (18)
                     Position: Vocalist, Sub-Rapper

                     Name: Jung Soo-jung (Krystal)
                     Birthday: October 24,  1994 (18)
                     Position: Maknae, Lead Vocalist

Credited to Google, Wiki.