As
tarshack already responded,
https://f95zone.to/threads/little-sister-v0-4-master-wuju.45362/post-4030122
Depends on the company, the countries and the culture there. There are no global standards about it. It's not like they're included to the international air traffic regulations, since they don't affect air traffic safety.
I'm sure you can meet an air hostess with visible tattoos somewhere. I'm not sure, but I may have seen one or two myself.
Tattoos and piercings
Most airlines do not allow any tattoos or piercings visible when the cabin crew are wearing their uniforms and most, such as BA, Emirates and Etihad, do not allow any visible tattoos to be covered with cosmetics, plasters or even jewellery, as cabin crew are expected to have “excellent personal presentation, style and image”, according to Etihad’s requirements.
“As all our uniform shirts are white, you will be required to wear an appropriate white undergarment if you have a tattoo on your upper body in the blue area so that your tattoo is in no way visible through the uniform shirt”, BA states.
Airlines require cabin crew to cover any visible tattoos when wearing their uniforms
“Tattoos on the feet are not permitted, as they cannot be concealed. All shoes must be of the classic court style, which leaves the top and side of the foot exposed. The maximum permitted hosiery density is 15 denier and does not cover up tattoos.
“You will be required to remove any items from your tongue for training and duty. Tattoos are not permitted on wrists. Watches must be of a discreet design with either a small silver or gold metal bracelet, or brown/black leather strap” the airline said.
Air Carriers also can dictate certain types of apparel not to be worn by passengers and can refuse to board those who do not comply.
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