Chrissy Teigen and John Legend dress up as the Queen and Prince Charles for Halloween

What will Her Majesty make of this? Chrissy Teigen and John Legend have transformed from Hollywood royalty to real royalty by dressing up as Queen Elizabeth II and Prince Charles for Halloween.

In a video shared by Chrissy on her Instagram Stories yesterday, John puts on his best British accent and jokingly says: "Hello, Happy Halloween to our loyal subjects" as the couple get ready for a Halloween party in LA.

They appeared to have pulled out all the stops for the scariest night of the year, with costumes that wouldn't look out of place in Buckingham Palace.

The mum-of-two donned a blue overcoat with large black buttons, a brooch and a matching hat. She added a silver-grey wig, nude stockings, black shoes and a black handbag to channel the monarch.

While John opted for a formal red jacket covered in military regalia, a receding hairpiece and a pair of black pants as her son, Prince Charles.

Their new ages appeared to wear them down though. "We were going to go somewhere, but we're so tired," Chrissy told her followers. "We worked all day and we're so tired...So we're at home."

Who needs a celeb-filled party when you're living the royal life?