Iron Man actress Gwyneth Paltrow has revealed that she is open to having another child with husband, Coldplay lead singer, Chris Martin.

The couple are already parents to two children, 8-year-old daughter, Apple and 6-year-old son, Moses but speaking to designer Diane von Fürstenberg for InStyle magazine, she said: "My brain says, 'Oh, I think I'm done, the kids are big now and I don't want to go back to changing diapers'.

"But a part of me would love to have another. Of course, I'm old now!"

The 40-year-old added: "I haven't starred in a movie since I was pregnant with my daughter; I can't be away from home for that long. I look for an interesting supporting part about once a year. That's the most I can manage.

"Some women can do it and that's fantastic, but I can't. You make choices as a wife and mother, don't you? You can't have it all. I don't care what it looks like."

Speaking about her marriage, she said: "We laugh a lot - and at the same jokes. We like the same music and like to do the same things.

"Probably our artistic temperaments together [is the worst thing]. Artists are sensitive; there are ups and downs, mood-wise.

"Musicians need a certain gravitas and focus in order to write. The temperament that goes with someone who is creative can be challenging."