General Affectionate Terms:
* 'Anakala nani - Beautiful child (can be used for a princess)
* 'Ali'i wahine maika'i - Good female chief (can be used to express respect and affection)
* Aloha 'oe - Farewell to you (often used in a loving context)
Adding "Sweet" to the Expression:
You could use descriptive words to imply sweetness, such as:
* 'Anakala nani a me ka 'ono - Beautiful and delicious child
* 'Ali'i wahine maika'i a me ka 'olu'olu - Good and kind female chief
Using "Sweet" as a Description:
* 'Anakala 'ono - Sweet child
* 'Ali'i wahine 'ono - Sweet female chief
Context is Key:
Ultimately, the best way to express "sweet princess" in Hawaiian depends on the specific context and the level of formality you want to convey.
Remember that Hawaiian is a nuanced language and using literal translations can sometimes feel awkward or unnatural. Consider the overall message you want to convey and use the most appropriate words and phrases to express it.