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Annabelle Shim, known mononymously as Belle, is a Korean-American singer-songwriter under S2 Entertainment and AURA. She is a member of the girl group KISS OF LIFE.

Prior to her debut as an idol, she already had credits for writing and composing for artists such as i-dle's Miyeon, LE SSERAFIM, and Purple Kiss. She is also recognized for lending her voice as background vocals for Child by NCT's Mark.