I want to get plastic surgery, but how much should I tell my family?

I want to get plastic surgery, but how much should I tell my family?

If I tell my family in advance, I think they will worry, but if I do it without saying anything and they find out later, that would also be awkward.

Procedures and plastic surgery feel completely different, so I feel like I should definitely mention this.

If I say anything, I feel like they'll object again.............. Haa.................