AOSC: This week's #1 artists by age
15 - 1996-05-15 - Birdy
17 - 1994-11-24 - Reece Mastin
18 - 1993-06-07 - Ji-Yeon (T-ara)
18 - 1993-04-22 - Hwayoung (T-ara)
19 - 1992-07-22 - Selena Gomez (Selena Gomez & The Scene)
20 - 1991-10-03 - Aki Takajo (French Kiss)
20 - 1991-07-15 - Yuki Kashiwagi (French Kiss)
22 - 1989-09-11 - Asuka Kuramochi (French Kiss)
22 - 1989-09-08 - Avicii
22 - 1989-05-30 - Hyomin (T-ara)
22 - 1988-12-12 - Eun Jung (T-ara)
23 - 1988-05-05 - Adele
23 - 1988-02-20 - Rihanna
24 - 1987-10-05 - So Yeon (T-ara)
24 - 1986-12-12 - Qri (T-ara)
25 - 1986-03-22 - Boram (T-ara)
25 - 1986-03-18 - Lykke Li
27 - 1984-01-17 - Calvin Harris
28 - 1983-04-23 - Taio Cruz
30 - 1981-05-21 - Joey Clement (Selena Gomez & The Scene)
30 - 1981-01-21 - Michel Telo
32 - 1979-09-17 - Flo Rida
33 - 1978-06-24 - Emppu Vuorinen (Nightwish)
33 - 1978-04-21 - Jukka Nevalainen (Nightwish)
34 - 1976-12-25 - Tuomas Holopainen (Nightwish)
40 - 1971-06-21 - Anette Olzon (Nightwish)
43 - 1968-04-06 - Akos
45 - 1966-01-14 - Marco Hietala (Nightwish)
The following artists aren't included on the list because you can't determine the exact dates of their birthdays: Dane Forrest, Ethan Roberts, Greg Garman (all of Selena Gomez & the Scene), all members of Haute Tenzion and Imany.