The 'Home' singer's little boy is set to undergo treatment for liver cancer.
Behind The Scenes With Hunger Games: Catching Fire
Watch Jennifer Lawrence talking about using IMAX in the forthcoming sequel to The Hunger Games.
The film changes into high-resolution IMAX at the moment Lawrence's Katniss steps into the arena.
" That is such an incredible moment to go into IMAX, when she's coming up out of this because she's kind of seeing this new world,' enthuses the Oscar-winning actress.
The Hunger Games: Catching Fire hits cinemas nationwide on November 21st.
Watch the interview and trailer below:
The star headed straight from the jungle to panto...but clearly hadn't had time to learn her lines!