Analyzing SM Entertainment’s Girl Groups
Since its founding in 1989, SM Entertainment has debuted a number of girl groups, such as S.E.S, M.I.L.K, CSJH The Grace, Girls’ Generation, f(x), Red Velvet, aespa, and Hearts2Hearts. Below you will find comparisons of these groups in different areas (member lineups, fanclubs, discography, etc.)
Notes:
#1: This post was made with zero intention of creating competition within the groups’ respective fandoms.
#2: All of the information below is up-to-date as of November 2025.
#3: For the ‘Latest Release’ section, I only counted Korean releases.
#4: For Red Velvet’s debut age range, I used the ages of the members during their first 5-member release.
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Group Name in Hangul
S.E.S – 에스이에
M.I.L.K – 밀크
The Grace – 더 그레이스
Girls’ Generation – 소녀시대
f(x) – 에프엑스
Red Velvet – 레드벨벳
Aespa – 에스파
Hearts2Hearts – 하츠투하츠
Number of Members (As of Latest Release)
S.E.S – 3
M.I.L.K – 4
The Grace – 4
Girls’ Generation – 8
f(x) – 4
Red Velvet – 5
Aespa – 4
Hearts2Hearts – 8
Former Members
S.E.S – None
M.I.L.K – 1 (Yumi: 2001-2003)
The Grace – 1 (Stephanie: 2005-2016)
Girls’ Generation – 1 (Jessica: 2007-2014)
f(x) – 1 (Sulli: 2009-2015)
Red Velvet – None
Aespa – None
Hearts2Hearts – None
Fandom Name
S.E.S – Friend (친구)
M.I.L.K – Milky Way
The Grace – Shapley (샤플리)
Girls’ Generation – S♡NE (소원)
f(x) – MeU (미유)
Red Velvet – ReVeLuv (레베럽)
Aespa – MY (마이)
Hearts2Hearts – S2U (하츄)
Fandom Color(s)
S.E.S – Pearl Purple
M.I.L.K – Pink
The Grace – Pearl Pink
Girls’ Generation – Pastel Rose Pink
f(x) – Pearl Light Periwinkle
Red Velvet – Pastel Coral
Aespa – Aurora (Wisteria & Malibu)
Hearts2Hearts – Baby Blue
Official Lightstick
S.E.S – None
M.I.L.K – None
The Grace – None
Girls’ Generation – Photo Link
f(x) – None
Red Velvet – Photo Link
Aespa – Photo Link
Hearts2Hearts – None
Year(s) Active
S.E.S – 1997-2002; 2016-2017
M.I.L.K – 2001-2003
The Grace – 2005-2015
Girls’ Generation – 2007-2017; 2022-present
f(x) – 2009-2019
Red Velvet – 2014-present
Aespa – 2020-present
Hearts2Hearts – 2025-present
Current Status
S.E.S – Disbanded
M.I.L.K – Disbanded
The Grace – Indefinite Hiatus
Girls’ Generation – Semi-Active
f(x) – Inactive
Red Velvet – Active
Aespa – Active
Hearts2Hearts – Active
Debut Date
S.E.S – November 1, 1997
M.I.L.K – December 17, 2001
The Grace – April 15, 2005
Girls’ Generation – August 5, 2007
f(x) – September 5, 2009
Red Velvet – August 1, 2014 (4 members), March 17, 2015 (5 members)
Aespa – November 17, 2020
Hearts2Hearts – February 24, 2025
Age Range of Members at Debut
S.E.S – 16-17 years old
M.I.L.K – 16-18 years old
The Grace – 17-21 years old
Girls’ Generation – 16-18 years old
f(x) – 14-22 years old
Red Velvet – 16-23 years old
Aespa – 18-20 years old
Hearts2Hearts – 14-18 years old
Debut Release
S.E.S – I’m Your Girl (Full Album)
M.I.L.K – With Freshness (Full Album)
The Grace – Too Good (Single)
Girls’ Generation – Into the New World (Single Album)
f(x) – La Cha Ta (Digital Single)
Red Velvet – Happiness (Digital Single)
Aespa – Black Mamba (Digital Single)
Hearts2Hearts – The Chase (Single Album)
Latest Release
S.E.S – Remember (Special Album; 2017)
M.I.L.K – With Freshness (Full Album; 2001)
The Grace – One More Time, OK? (Full Album; 2007)
Girls’ Generation – FOREVER 1 (Full Album; 2022)
f(x) – All Mine (Digital Single; 2016)
Red Velvet – Cosmic (Mini Album; 2024)
Aespa – Rich Man (Mini Album; 2025)
Hearts2Hearts – Focus (Mini Album; 2025)
Number of Original Songs
S.E.S – 148
M.I.L.K – 16
The Grace – 36
Girls’ Generation – 154
f(x) – 69
Red Velvet – 188
Aespa – 57
Hearts2Hearts – 8
Number of Concerts/Concert Tours
S.E.S – 2
M.I.L.K – None
The Grace – 2
Girls’ Generation – 8
f(x) – 1
Red Velvet – 7
Aespa – 6
Hearts2Hearts – None
Eldest Member
S.E.S – Bada (b. February 28, 1980)
M.I.L.K – Heebon (b. May 11, 1983)
The Grace – Lina (b. February 18, 1984)
Girls’ Generation – Taeyeon (b. March 9, 1989)
f(x) – Victoria (b. February 2, 1987)
Red Velvet – Irene (b. March 29, 1991)
Aespa – Karina (b. April 11, 2000)
Hearts2Hearts – Carmen (b. March 28, 2006)
Youngest Member (Maknae)
S.E.S – Shoo (b. October 23, 1981)
M.I.L.K – Hyunjin (b. February 27, 1985)
The Grace – Stephanie (b. October 16, 1987)
Girls’ Generation – Seohyun (b. June 28, 1991)
f(x) – Krystal (b. October 24, 1994)
Red Velvet – Yeri (b. March 5, 1999)
Aespa – Ningning (b. October 23, 2002)
Hearts2Hearts – Ye-on (b. April 19, 2010)
Leader
S.E.S – Bada
M.I.L.K – Heebon
The Grace – None
Girls’ Generation – Taeyeon
f(x) – Victoria
Red Velvet – Irene
Aespa – Karina
Hearts2Hearts – Jiwoo
Foreign Member(s)
S.E.S – 1 (Shoo)
M.I.L.K – 1 (Yumi)
The Grace – 1 (Stephanie)
Girls’ Generation – 2 (Sunny & Tiffany)
f(x) – 3 (Victoria, Amber, & Krystal)
Red Velvet – None
Aespa – 2 (Giselle & Ningning)
Hearts2Hearts – 2 (Carmen & Stella)
Main Vocalist(s)
S.E.S – Bada
M.I.L.K – Hyunjin
The Grace – Lina & Dana
Girls’ Generation – Taeyeon
f(x) – Luna
Red Velvet – Wendy
Aespa – Winter & Ningning
Hearts2Hearts – Carmen & Yuha
Main Rapper
S.E.S – Shoo
M.I.L.K – None
The Grace – None
Girls’ Generation – Hyoyeon
f(x) – Amber
Red Velvet – Irene
Aespa – Giselle
Hearts2Hearts – Juun
Main Dancer
S.E.S – Bada
M.I.L.K – Hyunjin
The Grace – Stephanie
Girls’ Generation – Hyoyeon & Yuri
f(x) – Victoria
Red Velvet – Seulgi
Aespa – Karina
Hearts2Hearts – Juun
Visual
S.E.S – Eugene
M.I.L.K – Bomi
The Grace – Lina
Girls’ Generation – Yoona
f(x) – Victoria & Krystal
Red Velvet – Irene
Aespa – Karina & Winter
Hearts2Hearts – Jiwoo, A-na, & Ian
Center
S.E.S – None
M.I.L.K – None
The Grace – None
Girls’ Generation – Yoona
f(x) – Krystal
Red Velvet – Irene
Aespa – Karina
Hearts2Hearts – Ian
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made by kisses2themoon
Related: Analyzing SM Entertainment’s Boy Groups
Are you a fan of any of SM Entertainment’s girl groups? Feel free to comment down below!
