We have a little sister, and her breasts are not yet grown. What shall we do for our sister on the day she is spoken for? (NIV)
[Gathered with her family and the wedding guests in her mother's cottage, the bride said to her stepbrothers, When I was a little girl, you said] We have a little sister and she has no breasts. What shall we do for our sister on the day when she is spoken for in marriage? (AMP)
We have a little sister, and she hath no breasts: what shall we do for our sister in the day when she shall be spoken for? (KJV)