'Difficult' Meghan Markle loses fourth aide in matter of months

Meghan Markle has lost her fourth personal staff member in a matter of months, with her assistant private secretary the latest to hand in their resignation.

Amy Pickerill, who has been working with the Duchess of Sussex since she relocated to the United Kingdom ahead of her wedding last year, announced she will leave the royal's side after the birth of her first baby.

"Amy will be leaving but has agreed to stay on to help following the birth of the baby," a source told NBC News.

"She and Meghan are very close and it's all very amicable. She has been with her since she moved from Canada and she will remain as a personal adviser to her in the long term."

However, there is speculation that not all of the recent resignations have been as amicable, with Markle described as a "difficult" boss.

In November, The Daily Mail quoted an inside source as saying that Markle typically starts her working day at 5am and messages her  staff with ideas and requests six or seven times a day.

"Meghan needs someone with reserves of energy and patience to help her define her future role," the source told the newspaper.

Ms Pickerill's departure comes on the heels of the loss of personal assistant Melissa Touabti, the Duchess' unnamed female bodyguard, and the resignation of her former private secretary Samantha Cohen.

The royal couple are expecting their first baby sometime in April.