What should be used in the closing of a letter to son from father?

[newbie10]

Hi,

In case of a personal letter to father or mother, a son or daughter can write "yours affectionately Tom ( or Jenny)", but what parents can write to their children's letter in the closing section.
I don't know properly the forms used in the closing section and thus can't explain properly.

From children to their Parents

Salutation -> My dear daddy / mummy and Closing -> Yours affectionately Tom or Jenny

Form Parents to their Children

Salutation -> My dear Tom / Jenny and Closing -> ???????

Kindly explain

Regards

 

[MikeNewYork]

Very simply, "Love" or "Love you" would work.