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Theoretically, your sister.
If your sister marries, her husband is now your brother in law. So his wife would be your sister. If he has re-married, he is technically not your brother in law anymore, so you have no direct relation to his wife.
AnswerYour brother-in-law's wife is your sister-in-law. That is to say your wife's brother.
What else can I help you with?
What do you call children of 2 brothers married to 2 sisters?
cousins
Does Jason Mraz have kids?
No, I do not believe John Mayer has any kids.
What is the name of Bruno Mars kids?
Eric, Jaime, Tiara, Tahiti and Presley. (:
What did the Jonas Brothers play at Kids Inaugural?
The Jonas Brothers performed SOS, Lovebug, and Tonight at the Kids Inaugural 2009
Who sings the song kids in the future?
The Jonas Brothers sing kids of the future, not kids in the future.
What do you call your brothers kids kids?
Your brother's children would be called your nieces or nephews.
What do you call your own brothers kids?
Your brother's children would be called your nieces or nephews.
How should I call my brother's kids?
Your brothers children are your nephews (boys) and nieces (girls).
What Was The Wright Brothers kids Names?
they did not had children
What do you call your dads brothers kids?
your cousin.
What you call fathers brothers children?
Cousins
What does George Clooney call himself to his kids?
He has no children.
Did the wright brothers have kids?
No,Wilbur state, '' I don't have time for children and airplanes.''
Are Barack Obama's children fans of the Jonas Brothers?
Barack Obama's kids are very much fans of the Jonas brothers.
IN a family every children has 3 sisters and 3 brothers then how many children are there in a family?
at least seven kids
What do you call children of 2 brothers married to 2 sisters?
cousins
What do citizens in china call the illegal children?
black children
