She is afraid of going underwater

A childhood mishap has left Jennifer with a crippling fear of going underwater – which proved problematic for her role in the 2014 film 'Cake' as her character jumped into a swimming pool.

She said: "I basically have a real fear of going underwater.

"I was a kid and I was riding this tricycle around a swimming pool and I drove my tricycle into the swimming pool and I didn't let go and my brother tried to (help me).

"So, I can't go underwater and no one will believe me. I honestly can't."