Siblings looking different from one another

My girls have the same father. I'm white with 25% native American. He's 50% African American,25% portoguese (spelling?) with 25% native American. I have had people come up to me asking if my kids have the same father. (Their pic is in the reply). (my older daughter that is in the pink shirt had her hair relaxed to make it straight like that)

[SevenKisses]

You have some beautiful daughters!
They really do not look ANYTHING alike.
I find it hard to believe people actually ask you that. 

[Bluescorpia]

Oh you be surprised how people have the audacity to ask

Quoting SevenKisses:

You have some beautiful daughters!
They really do not look ANYTHING alike.
I find it hard to believe people actually ask you that. 

[nikkifam5]

Beautiful kids :). My friend is African American and her husband is Irish. She laughs and says if she didn't give birth to them people wouldn't believe they were hers. Her kids are very fair skinned with blue eyes and dark blonde hair.

[Anonymous 10]

They look alike to me . I don't get it.