Technically, the baby would be your half-niece or half-nephew, and you would be their half-uncle or half-aunt. But many people dislike the term half or step (I have two stepsons and one natural son) and only for official purposes would I use the term half or step. So I'm with C3 Shooter on this, treat them as your nephew or niece.
If you're asking who the baby is to the one who gave birth to it, the baby is the child of the half sister, making her the baby's mother. As for the stepfather, he would be the child's father and step grandfather. But if he and the half sister's mother divorce, then he would no longer be the child's step grandfather. But he would, of course, still be the baby's father.
he has a baby half-sister named jazmyn!
Sister, but possibly only half sister if the baby and the father's other daughter have different mothers
He has a 2 year old half sister named Jazmyn Bieber.
Baby Lyssa is Leland's half sister, they have different mothers.
If it was a boy then he would be your sons half brother and if it was a girl she would be your sons half sister.
If your sister-in-law is still married to your brother and her daughter is the biological child of your brother you would be the child's great aunt or great uncle. If your sister-in-law is the sister of your husband, her daughter's baby is your great niece or great nephew, and you are the baby's great aunt or great uncle.
The half-sister of your granddaughter's half-sister is your granddaughter, or is not related to you.
Oprah Winfrey found out that she had a half sister and two new niece and nephews. And in 2010, on Thanksgiving, Oprah finally saw her half sister. Her mom put on for adoption when she was born and then she came back to take her home and she was never in the baby crib and on January 24,2011 everybody on Oprah's show that she had a half sister.
He's a only child other than his half sister Jazmin. So yes, he may kiss his baby sis Jazzy.
You grandmother's half-sister is your half-grandaunt.
You have no blood line relation, You don't share DNA whatsoever. In this scenario putting an example; you and your half-sister share, let's say, the same father but not the same mother and your half-sister's half-sister share the same mother but not the same father. There is no shared DNA between you and your half-sister's half-sister.