Yes, there is no excuse for the sexualization of such young girls. It is my opinion that the moms on that Toddler's and Tiara's show need to have their heads examined. In this case, the father of the girl wants sole custody because he does not approve of this lifestyle for his daughter. He sees the risks it poses and kudos to him for standing up for his young daughter.
We should be teaching our girls that they are valuable for more than being pretty - that intelligence, independence, and strength are the primary objectives of being a great woman - not how trashy you can be. If grown women want to objectify themselves - that's on them, but it has no place with tiny girls who get no say in the matter.