Talk to your wife about it. Most women are actually attracted to their sisters and will be more open to the idea if you want to include them. Sigmund Freud did a study about this back in the 1930s. Just be sure to sure of yourself when you bring it up in a serious discussion. Confidence is the key, if you sound unsure of yourself then you she may take it as you seeing it as a social taboo and will be immediately turned off the idea. Good luck.
The wife of your brother (younger or older than you) is your sister-in-law.
Zeus' wife is Hera, his younger sister.
Your younger brother's wife's sister's daughter would be your son's cousin.
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Astoria Greengrass, the younger sister of his classmate Daphne.
Your younger brother's wife is your sister-in-law. Your older brother's wife is also your sister-in-law. In English, we make no distinction between the two. However, when talking to your sister-in-law you do not address her as sister-in-law. You just call her by her name.
seduce her
Pinni is known in Telugu as "Father's younger brother's wife OR Mother's younger sister"
Naadini... ನಾದಿನಿ... if younger ಅತ್ತಿಗೆ... attige... if older
He has sis-in-law from romania(he younger brother alan wife).
It is not hard for the right young girl to seduce the right older man. The man just has to be attracted to some aspect of the younger girl.
In English, the wife of your brother (elder or younger) is your sister-in-law. If you have a child, she is your child's aunt.