“When she dines on her own she’s very disciplined,” McGrady said.

“No starch is the rule … Just usually something like grilled sole with vegetables and salad.”

Garlic is also off-limits, asCamilla Parker-Bowlessaid during an appearance on “MasterChef Australia.”

Kate Middleton smiling

Queen Elizabeth is also a chocoholic.

“The children have a portion with no spice, yours is medium,” Kate said to William.

“And I quite like it hot.”

Kate Middleton in a black hat

What do members of the royal family typically eat in a day?

However, both women are also happy to indulge in their favorite unhealthy foods on occasion.

“I’m always hoping I’m having lunch with people, so we can share fries.

Kate Middleton and Meghan Markle

It’s its own food group for me,” Meghan said.

Meanwhile, according to Delish, Kate is a more adventurous eater, indulging in rare staples like geoduck.