Prince Harry jokes that "it's about time" he becomes an uncle.
The British Royal's sister-in-law, Prince William's wife Duchess Catherine Middleton, is currently expecting a child.
During a press conference in Afghanistan, where Prince Harry is ending his tour in the armed forces, the royal revealed his thoughts on the family's new addition.
"Obviously I'm thrilled for both of them. It's about time," Harry laughed.
"I can't wait to be an uncle."
Harry gave his congratulations immediately.
"I spoke to my brother and her, and they're both very well and both very happy obviously. I didn't send a letter of congratulation like most of the papers said," he recalled.
"I literally am very very happy for them, but I just only hope that she and him - but mainly Catherine - hopefully that she gets the necessary protection to allow her as a mother-to-be to enjoy the privacy that that comes with."
The Duchess of Cambridge spent a few days at King Edward VII hospital in London in December.
Catherine was diagnosed with Hyperemesis gravidarum, which causes severe nausea and vomiting and can lead to dehydration and weight loss.
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