Member ages
Classy Member Ages and Birthdays
Classy member ages and birthdays ranked oldest to youngest, from Hyungseo at age 25 to Seonyou at age 18.
Oldest to youngest
| Rank | Member | Age | Birthday | Position |
|---|---|---|---|---|
| #1 |  HyungseoMember | 25 | Jun 25, 2001 | Member |
| #2 |  HyungseoMember | 25 | Jun 25, 2001 | Member |
| #3 |  ChaewonMember | 23 | Jun 4, 2003 | Member |
| #4 |  Hong HyejuMember | 22 | Dec 9, 2003 | Main Dancer, Vocalist |
| #5 |  Ri-wonMember | 19 | Jan 11, 2007 | Lead Dancer, Lead Vocalist |
| #6 |  JiminMember | 18 | Nov 25, 2007 | Center, Lead Vocalist |
| #7 |  Park BoeunMember | 18 | Feb 11, 2008 | Lead Vocalist, Face of the Group |
| #8 |  SeonyouMember | 18 | Mar 20, 2008 | Main Rapper, Lead Dancer, Maknae |