Girl names for 3rd daughter

Desiree'
We have 2 daughters already and found out we are having a 3rd! Yay! Our older 2 have the middle names Grace and Rose, that being said we had two names we were picking between but I didn't think she seemed like either of those names. So we like the name Grace Rose B--------- is it weird to have her name made up of her older sisters names? 

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