Similar to the placement of the large scrollwork tattoo that Sandee Westgate got recently.
http://lukeford.com/2009-04-22/sande...y-need-to-see/
I would think that such tattoos would somewhat hinder their marketability, especially for a glamour nude model like Sandee, but also for a Hollywood actress that might be cast in a role requiring a bikini or other costume where the tat would be glaringly visible.