I know that this is the name of an actress whose full name is
Tatiana.
Tatiana is okay but feels a bit dated.
I don't like Tati at all, I would have gone with
Tiana or something.
Tati reminds me of "daddy" in several languages as well as "titty" (sorry!)
Please rate my list:
https://www.behindthename.com/pnl/6232