* 清美 (kiyomi): This is the most frequent and generally preferred writing. 清 (kiyo) means "clear," "pure," or "clean," and 美 (mi) means "beauty." This combines to mean something like "pure beauty" or "clear beauty."
* 貴美 (kiyomi): 貴 (ki) means "noble," "precious," or "valuable," and 美 (mi) means "beauty." This implies a "noble beauty" or "precious beauty." While less common than 清美, it's still a valid option.
Other combinations are possible, but less common and often context-specific. Therefore, 清美 is the safest and most widely accepted kanji writing for the name Kiyomi.