Rigged Mesh piercing rigged to:
Legacy
Maitreya
MaitreyaX
Kupra
Belleza Freya
SLink Hourglass
Reborn
Reborn Juicy Rolls
Our ~LF~ Kim lower back piercing features 2 studs (that are interchangeable with balls / gems / spikes), linked together by chain and featuring either a heart charm or a long chain with ball or gem dropping down slightly between the cheeks.
See the HUD in action here: gyazo.com/c37e640a5e636f51e74c60902d6e1d35
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As general note for rigged Mesh, you can't move or reposition it at the body! Positions such as for the Navel as example are set to the actual mesh of the body, not to the texture of a certain skin brand, with swapping skins you may notice a offset between the texture and the mesh pieces, this doesn't means the pieces are not centered correctly but shows a issue with the skin texture you should feedback to the skin creator.
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Fitted Mesh has its limits!
Shapes made at the limits and usage of deformers may lead to a unpleasing result of the objects design.
Any questions ... shoot me a IM, Enjoy! :)
See item in Second Life