I think it's fine to an extant. Too many piercings kind of turns me off but I can't say anything about tattoo's as I have many myself. Tastefully done? They can look just fine. As far as ugly or hot? That's a persons personal preference.
Are Girls With Tattoos And Piercings Ugly Or Hot?
Depends on the girl, depends on her style, depends on the tattoos, depends on the piercings, depends on guys' preferences. Long story short: It depends.
It all depends on what and where they are.