Stella

Stella (스텔라), born Kim Da-hyun (김다현), is the Korean-Canadian lead vocalist of Hearts2Hearts under SM Entertainment. She grew up between South Korea and Vancouver, which gives her a bilingual ease that fits the group's global rollout, but the bigger reason she stands out is musical stability. Stella is one of the members who makes Hearts2Hearts sound settled even when the arrangements turn lighter and more delicate.

Her role inside the group is less about volume and more about control. Stella helps carry the melodic center across The Chase, Butterflies, Style, FOCUS, and 2026 single RUDE!, giving Hearts2Hearts a cleaner vocal spine as SM shapes the act beyond rookie novelty. The international background and instrument training help her profile, but the real selling point is that she already sounds dependable in a fast-moving release cycle.

That makes Stella one of the more quietly important members in Hearts2Hearts' early build. She gives the group a clear global-facing texture without feeling like a branding exercise, and that balance should matter more as the team moves into a longer promotion arc.