Lindemuler, a former porn star and recovering drug addict, had said she did not want James to move away from California. She accused the reality star in court of jeopardizing her relationship with their child in the hopes of winning back Bullock, People mag reported.
James, who recently bought a house near Bullock’s in Austin, testified that he was moving to the Lone Star state for business reasons. But he said he still wanted his three children to maintain a relationship with the "Blind Side" star.
"I'll move! I'll move!" Lindemuler reportedly yelled after the judge ruled in favor of joint custody.
According to the ruling, Sunny will live with her mom for the remainder of the summer and can move with her dad to Texas in the fall.