And I have since updated my baby math: If I don't get pregnant on my own within the next year or so, I plan to thaw my eggs and hopefully give birth to my first child at 44 and maybe a second by 46.

WSJ: Why I Froze My Eggs (And You Should, Too)

The Duchess, whose maiden name is Kate Middleton, has kept a low profile since the announcement in December that she is set to give birth to her first child in July.

CNN: STORY HIGHLIGHTS