So I’ve got all the bridesmaid dresses picked out except for my niece on my side of the family, I’m allowing my sister to choose her dress, as she is still a child. My only request is it match the color of the other dresses (blush). Should I let my sister in law do the same for her daughter who is the flower girl? Is this proper etiquette? I just want the easiest and affordable option as I’m not a picky bride as long as the color matches.