Kensington Palace has confirmed that Prince Harry and Meghan Markle are expecting their first child together.
In a statement from Kensington Palace, it said that the baby is expected in the spring of 2019.
This comes 5 months after Prince Harry and Meghan got married in a ceremony at Windsor Castle.
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The tour coincides the third Invictus Games, an international sports competition Harry founded in 2014 for wounded veterans and members of the military, which kicks off Saturday.
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They will also visit New Zealand, Tonga, and Fiji.
When the child is born Britain's Queen Elizabeth II will be the child's great-grandmother.
Harry is already a fond uncle to his brother Prince William's three children with Catherine, Duchess of Cambridge, and godfather to the offspring of several of his friends.