The pronunciation of "蕴姿" is "yùn zī". In English, it can be transliterated as "Yunzi". If you want a more creative English name with similar meanings, you could consider names like "Graceful Charm" (for its elegant and charming connotations similar to "姿", which means posture and grace) or "Hidden Beauty" (as "蕴" can imply hidden or contained. This name captures the idea of having beauty that is not immediately obvious but is there when one looks deeper). ????