Is “ our little girl is not so little anymore” correct and what are other ways I can say that ?

Answer 1

Yes, "our little girl is not so little anymore" is correct.

Other ways to say this could be:
- Our daughter is all grown up now.
- Our little girl has grown up so quickly.
- She's not our little girl anymore, she's a young woman now.
- Our daughter is maturing before our eyes.