Prince William's pregnant wife is admittedly nervous about giving birth to the future king or queen of England this summer. During a recent outing in London, Middleton bonded with another pregnant woman, Lisa, over childbirth woes. "I asked her if she was nervous about having a child and she said 'it would be unnatural if I wasn't. It's just human, isn't it?'" Lisa told reporters of her chat with Middleton.