I wonder why anna always choses to lie about the tatoo
1. She has only ever been asked about it once so I don't know how you come to the conclusion that she is always lying about it.
2. I suspect all the hiding, is the work of her management company, not Anna's decision at all. If that is not the case then why did she bother getting one in the first place? If she was always going to hid it. It doesn't make sense, but nothing surprises me when it comes to Octagon. It is like getting blood out of a stone when trying to get information about Anna from them.