It is said that the Hobi Hobi no Mi grants eternal youth to the user, besides allowing them to turn people into toys and wiping their existence out of anyone else's mind.
So that being said, it is implied that Sugar is much older than she really is, and that the Hobi Hobi no Mi only makes her look young. But I have tried looking at the chapters she is in but there is no mention of how old she is.
Is there something out there that tells us how old Sugar is?