Actor Will Smith and his daughter Willow Smith are set to battle it out on film on July 2nd:
VIA IOL:

Will Smith and his daughter Willow are set for a big-screen battle in July when their new films are released on the same day.

Seven-year-old Willow Smith’s film ‘Kitt Kittredge: An American Girl’ is set to hit US cinemas on July 2 – the day her father’s new superhero movie ‘Hancock’ opens.
The actor has already let his daughter know he plans to win the box office crown.

Willow explains: “He said: ‘Sorry baby, but I got to stomp on you.’ He thinks he is going to be beat me, but I think not. I think I am going to beat him.”