Meghan Markle

But the late-night host is keeping the details under wraps.

While announcing the National Business Coalition for Child Care.

They'll most likely be bunking with Princess Eugenie and her family.

And they're bringing Archie and Lilibet.

And that his brother was too "fragile" for the pressures of princedom.

From fashion to facing the press, only they know exactly what it's like to marry into the British royal family.