Literal translation:
* Mes 16 ans: This is the most literal translation, meaning "my 16 years." However, it doesn't convey the celebratory tone of "my sweet 16."
More idiomatic options:
* Mes 16 ans bien-aimés: This means "my beloved 16 years" and adds a touch of sentimentality.
* Mes 16 ans adorés: This means "my adored 16 years" and suggests a sense of affection and celebration.
* Mes 16 ans magiques: This means "my magical 16 years" and emphasizes the specialness of the occasion.
Contextual options:
If you are referring to the event itself, you could say:
* Mon anniversaire de 16 ans: This means "my 16th birthday."
* Ma fête des 16 ans: This means "my 16th birthday party."
Ultimately, the best translation will depend on the specific context and the feeling you want to convey.