What they share
Both are short Latin names with clear, celestial meanings. Both cross cultures without needing explanation and both pair easily with a wide range of middle names. Neither needs a nickname; each is already whole.
Pick Luna if…
Pick Luna if you want the softer, more dreamlike option. Luna means 'moon' in Latin and lands with a gentle, unpretentious confidence. It has become genuinely popular without feeling overused, and its quietness is part of the appeal.
Pick Stella if…
Pick Stella if you want the brighter, slightly more glamorous option. Stella means 'star' and carries a touch of stage-light shimmer alongside its classical roots. It has a crisper consonant pattern than Luna and feels a little more ready for a spotlight.
Luna is the quieter of the two; Stella the more luminous. Both are unambiguously celestial, which is rare. The choice is really about whether you want moonlight or starlight, and which sound settles better with your surname.