My fiancé and I decided early on in our planning process that we didn't want any children at our wedding. This hasn't been an issue so far, since the only children in our family are those of extended cousins, etc. However, my soon-to-be sister-in-law (and maid of honor) had a beautiful baby girl at the beginning of February! She told me that she was going to bring the baby to the rehearsal, but that she would be able to leave the baby with her aunt the day of the wedding. Recently, she informed me that she changed her mind and is bringing the baby to the wedding!! Is there a good way to ask her to leave her 2-month old baby at home?? Any and all advice would be appreciated!