Nonetheless, we do have some knowledge courtesy of one of Markle's close friends, who recently opened up to The Sun about the royal's pregnancy must-haves.
"Meghan's pregnancy standby is Bio-Oil which is non-greasy and does the job effortlessly without messing up her clothes or five-star sheets," an insider told the U.K tabloid.
The luxurious-feeling body oil is beloved by women for its nourishing ingredients including vitamin A, E and Lavender Oil. At just $15 a pop this budget-friendly hero delivers high-end results without costing the earth.
If Meghan is hoping to keep stretch marks at bay - she's not alone. Almost 80% of women see more stretch marks after being pregnant.
What are stretch marks?
While some women might feel self-conscious about their ‘tiger stripes’ it's important to remember that there is absolutely nothing wrong with having stretch marks.
Stretch marks are a reality for between 50 and 90 per cent of people on the planet according to research from the University of Michigan. While they most commonly appear on the abdomen (from pregnancy or weight gain) other common areas include the thighs, hips, bum and arms.
WATCH: Meghan Markle Plays Up Her Pregnancy Glow in a Blush Brandon Maxwell Dress and Blazer