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Stage Name Sia (시아)
Birth Name Choi Shi-ah (최 시아)
Position Leader, Lead Vocal, Face of The Group
Birthday January 12th, 1997
Zodiac Sign Capricorn
Height 165cm (5'5")
Weight 45kg (99lbs)
Instagram sia_sia_


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  • She was born in Chungcheongbuk-do, South Korea
  • She trained for 5 years before debuting
  • Speaks fluent Japanese and Korean. She knows English as well, but she isn't very fluent in it.
  • Lived in Japan for 3 years
  • Appeared in a lot of music videos pre-debut
  • A huge Shinee fan
  • Called the 'mother of the group'
  • Her nickname is 'Duck' because of her expressing her love for them in an interview during 'Vixen' era (2017)


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Twice's Mina (Very close friends)
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Gugudan's Sejeong (Very close )
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NCT's Yuta (Close friends, dating speculations)


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Seo-hyun (Little sister)
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Chuu (Dog, female)