dvoraks
Yes, like the others said I don't see a problem with her trying her mother's belt on for a bit, on her own terms. But 13 is an age of curiosity and exploration, like Ines wrote.
If you want to give her a choice to wear it, 13 is much too young to decide something like that, and she won't be able to oversee the consequences and what she is giving up.
If you are determined to make her wear one, that should come later, like you planned, but you could consider telling her when she is going to wear it, and present it as something positive, like part of the transition into womanhood. Then she at least will hopefully not fear the time when it will come. Whether telling her is wise is very dependent on the character of your daughter and your relation with her, I think.
But I hope you will give her a choice, because forcing her would be child abuse.
