The late Queen's lady-in-waiting Lady Susan Hussey has apologised and resigned after she repeatedly asked a black British charity boss where she was "really" from.
Ngozi Fulani, a charity founder, was questioned about her background at the charity event at the palace on Tuesday.
Ms Fulani, said she was "totally stunned" by Prince William's godmother's comments.
The palace described the remarks as "unacceptable and deeply regrettable".
Shortly after Lady Sussan tendered an apology, pro-monarchy experts and journalists questioned Ngozi's controversial commentary on royal family and sought explanation over her past statements.
"While it’s terrible Ngozi was made to feel uncomfortable at Buckingham Palace, it is surely the duty of any journalist to point out she has previously accused Charles and Camilla of “domestic violence” towards Meghan. A shocking unproven claim," sais journalist Dan Wootton.
Sean ‘Diddy’ Combs was accused by four women, including ex Cassie, of harrowing sexual assault crimes
Kylie Jenner and Timothee Chalamet sparked their romance over the summers
Cardi B, Offset recently sparked split rumours after seemingly throwing shade at each other on social media
Jungkook is set to begin his military duty from Monday, December 11, alongside Jimin, V and RM
BTS V will serve as active-duty soldiers for 18 months along with RM, Jungkook and Jimin
Paris Hilton and her husband Carter Reum announced London’s birth just weeks ago