What is the difference between a stepsister and a half-sister?
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Q:

What is the difference between a stepsister and a half-sister?

A:

Quick Answer

A stepsister is the daughter of one's stepparent, while a half-sister shares the same biological mother or father. A half-sister can only share one biological parent to be considered a half-sibling.

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Full Answer

If two adults marry, and each has children from a previous relationship, those children will become step-siblings to each other. Neither of the children shares a biological parent.

However, if those two married adults have a baby together, that new baby will become the half-sibling of the older children from each parent's previous relationship. The older children share one common parent with the new baby, making the baby their half-sibling.

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