Cameron Diaz would want to be in the "best shape" of her life before having children of her own.

Cameron Diaz would want to be in the "best shape" of her life before having children. 

The 39-year-old actress - who is renowned for her toned physique - believes carrying a child and subsequently looking after a baby on minimal sleep would be tough, so she would want to be in perfect condition.

She said: "If I was having a child I would think that I would want to be the strongest I've ever been in my life.

"If I was squeezing a baby through my body, if I was going to be carrying it around, it I was going to then be afterwards having sleepless nights, I would just want to be in the best shape of my life."

The 'What to Expect When You're Expecting' star - who was most recently romantically linked to rapper P. Diddy - would love to have children in the future, and is open to any means of expanding her family.