Wearing a dusky pink dress and touching the back of her new husband Prince Harry, the Duchess of Sussex stepped out Wednesday morning (AEST) for her first official job as a member of the royal family.

Meghan, who smiled constantly, was wheeled out by the Windsors just three days after her wedding for a garden party at Buckingham Palace in honour of Prince Charles’s 70th birthday later this year.

Under pale blue skies, the newest royal entered the palace garden at 4pm local time, when a military band played the National Anthem to announce the Queen’s arrival.

Welcome to the brand new life of the Duchess of Sussex.

More than 6500 guests were invited for the party where they were treated to a speech from Harry, musical performances and a customary cup of tea.

During the speech a bee buzzed close to the duke and he fluffed his lines and quipped “that bee really got me”.

Meghan and the Duchess of Cornwall broke into a fit of giggles as Harry tried to keep his composure.

Meghan Markle struggles to contain her laughter as a bee interrupts her husband’s speech. Photo: AAP

Meghan looked impressive in a chic dress by Goat and hat by Philip Treacy, while Harry was dapper in a morning suit and held his silk top hat in his hands as he greeted some of the guests invited to the event.

Harry began his speech by remembering those “affected by the tragic events at the Manchester Arena a year ago”. The first anniversary of the bombing was marked by a memorial service earlier on Tuesday at Manchester Cathedral.

The Duke affectionately referred to Charles as “Pa” in his speech and praised his “incredible body of work that has, and will, continue to make such a huge difference to so many people’s lives both here and around the world”.

The Prince of Wales, the Duchess of Cornwall and the new Duchess of Sussex, listen to Harry’s speech. Photo: AAP

So far, Meghan’s fairytale transformation from actress to duchess has looked by turns glamorous, romantic and luxurious.

But already the UK press is asking if, as the flowers wilt and the Givenchy gown is put into storage, Meghan will eventually “hate” Britain for the same reasons she wanted to be part of it: the pomp, the position and the pageantry.

“At the moment, she is in full Buffy the Establishment Slayer mode, ready to save the world from patriarchy,” said The Telegraph.

“Will the shine rub off Windsor Inc when Meghan realises that the job involves punters rather than celebrities, and opening biscuit factories rather than bestriding red carpets?”

The day before the garden party and her first engagement as a wife, the duke and duchess looked relaxed heading through the Kensington Palace gates in a Range Rover on Monday (local time).

But for Meghan, having her husband drive her home might be the most normal thing about her new fishbowl world.

The ex-Suits star has given up her nationality, religion and career to marry Harry, and the big question is, now what does she do with the rest of her life?

The newest royal said during her post-engagement interview with the BBC that she plans to “hit the ground running”. Tick: Within hours of the wedding, her and Harry’s new titles had been added to Kensington Palace’s social media accounts.

The royal family explained Meghan’s role in an update of its official website: “She will perform royal duties in support of the Queen through engagements at home and overseas, alongside a growing portfolio of charitable work and patronages.”

Within weeks Meghan is expected to announce which charities and campaigns she will support after her delayed honeymoon.

The former advocate for UN Women and ambassador for World Vision has reportedly been taking meetings and planning for months how best to direct her energies and experience.

She is said to have told guests at her wedding reception she would “love” to get involved in the Diana Award, named for her late mother-in-law Princess Diana:  “That’s why I am here, bring it on.”