Elizabeth Debicki put on a cosy display with her rarely-seen boyfriend Kristian Rasmussen as they stepped out in London last Wednesday.

The actress, 32, famed for playing Princess Diana in The Crown, wrapped up with a green padded jacket and bright blue joggers, along with a knitted tammy hat.

She framed her face with a pair of sunglasses and sported some white trainers for the romantic stroll through a park in the capital.

Meanwhile Kristian, who little is known about, opted for a grey coat, and navy jeans, while accessorising with a light pink baseball cap.

Elizabeth was accompanied by her very own Prince Charming as she celebrated the series five launch of Netflix drama The Crown in November.

The talented star left the red carpet premiere at London's Theatre Royal Drury Lane with Kristian. 

The couple were making their first red carpet appearance and their second in as many days having previously ventured out hand-in-hand just the day before. 

Dressed in an elegant black evening gown, Elizabeth climbed into the rear of a waiting cab with her boyfriend after attending an after-show party. 

Kristian - who bears a curious resemblance to The Crown's former Prince Phillip, Matt Smith - looked appropriately dapper in a black tuxedo and matching dress shirt as he followed her into the back seat. 

The previous day they were hand-in-hand during a shopping trip in London, with Elizabeth seen laughing with her new boyfriend as they enjoyed a hug and a kiss. 

She was previously rumoured to have dated her co-star in The Night Manager, Tom Hiddleston, but never confirmed any romance.

Elizabeth's outing comes as filming for the sixth and final series of The Crown is well underway, as the Netflix hits prepares its sixth and final series. 

Crew members from the Netflix hit were seen setting up Winchester Cathedral on Saturday as they prepared to film scene's for Princess Diana's funeral. 

Fans are eagerly awaiting its release later this year, but the show is already courting controversy with its plans to depict the tragic death of Diana. 

The stunning Gothic church was seen with cordons in place and location trucks on site at the weekend. 

Boxes of red and white roses were seen scattered across the floor, with lighting and scaffolding in place. 

The scene depicting a grief-stricken William and Prince Harry – then aged 15 and 12 – was filmed in secrecy at a disused RAF base.

The scenes will form part of The Crown's final series, which is expected to be released later in 2023. 

Imelda Staunton will reprise her role as Queen Elizabeth II, with Jonathan Pryce playing her husband Prince Philip.

Elizabeth will once again appear as Princess Diana in the build-up to her death, while Dominic West plays Prince Charles.