In many Christian churches, when a baby is born they are christened. They usually wear an elegant white outfit for the occasion and friends and family celebrate.
In the LDS church, there is no christening of babies (baptism is saved until the child is at least 8 years old), but rather a simple blessing of the child by those holding the proper authority to do so. Still, there is a family celebration, and usually the baby wears special white get-up.
Unless of course the baby girl being blessed has an overly-talented Grandmother who made her blessing dress for her, and opted to not do white.
My Grandma Kitchens made this dress for me and I was blessed in it as a baby.
Then my sister was blessed in it.
Now my daughter will be blessed in it.
There is not an ounce of me that would change a thing about this beautiful dress.