The general action of Ladies Chain has two or more women each leave their current man, star (or right pull by) with each other, and be courtesy turned by a man. The caller indicates which women are involved and how far they star.
This definition covers the regular Two Ladies Chain. Two Ladies Chain 3/4 is described in the comments section.
Head Ladies Chain
Right and Left Thru; Two Ladies Chain
Right and Left Thru; Ladies Chain
Side Ladies Chain Over; Side Ladies Chain Back
Four Ladies Chain
Four Ladies Chain 3/4
All Four Ladies Chain Across
Chain Those Ladies Over and Back (i.e., twice)
Four Ladies Chain; Chain Them Home (i.e., twice)
Do Paso, partner left, corner right, partner left; Four Ladies Chain
Shoot the Star; Four Ladies Chain
Four Ladies Chain is improper if any couple is sashayed or same-sex.
Some callers use Four Ladies Chain from normal facing lines. This is danced as if all couples were directly facing the center of the set except that it ends in the same facing lines. In some areas this is an extended application, and in other areas it is considered a gimmick. (See "Part 4: Additional Detail: Commands: Gimmicks".)
Two Ladies Chain is improper if either couple is sashayed or same-sex.
From a squared set with the men at home, Head Ladies Chain is danced by those currently at the Heads position, even if this involves the original Side women (e.g., after Four Ladies Chain 3/4).
The next four comments refer to uncommon or regional applications of Ladies Chain and may require workshopping.