Meghan Markle wears a well tailored Alexander McQueen tuxedo for her first black tie event with Prince Harry (Details, pics)

She's still finding her feet as she settles into life as a member of the royal family, and this evening Meghan Markle was careful not to tread on any toes as she opted for an understated black trouser suit for her first official evening event with Harry.

Perhaps mindful of William and Kate's high profile visit to Scandinavia, the former Suits star was careful not to compete with the Duchess of Cambridge who was enjoying a gala dinner at Oslo's royal palace at the same time as Meghan stepped out in London for the Endeavour Awards.

The bride-to-be opted for a slick tailored number by Alexander McQueen, one of the Duchess of Cambridge's favourite designers featuring a £1,245 grain de poudre wool, satin-lined blazer and £575 trousers, teamed with a £196 Silk Crepe de Chine Boss bodysuit from Tuxe Bodywear, which is a top and underwear in one.

Meanwhile in Oslo, the Duchess was also sporting a McQueen creation of a very different kind wearing a dreamy Grecian-style blush gown with crystal embellishment, jaw dropping diamond earrings and the bracelet the Queen wore on her wedding day.

Celebrity stylist and designer Lucas Armitage told Femail that Meghan's choice of outfit for her red carpet event proves she was mindful not to steal the attention away from the Duchess.

'She hasn’t had her princess moment in an amazing gown, but then maybe she felt she didn’t want to steal thunder,' he explained. 'Navigating royal etiquette is probably fairly hard so playing it safe is always a good option.

'Body language expert Elizabeth Kuhnke, added: 'Rather than drawing attention to herself, she has chosen an outfit that is stylish, tasteful and sophisticated without upstaging her soon to be sister-in-law.

'The bestselling author on the subject of communication and non-verbal behaviours continued: 'Her choice of an understated black and white outfit is perfect for the event, by being simple and chic while Catherine appears ethereal in her gown and jewels.

'Other than her engagement ring, I see no other jewelry on display, again presenting a subdued, yet chic statement in her choice of clothing, hairstyle and accessories. 'In keeping with her understated approach, Meghan also chose not to wear her hair up which would have added to the overall glamour of her look.

Instead, she kept things simple, letting her sleek, dark curls fall loosely around her shoulders.

Tonight’s event at the historic Goldsmiths’ Hall in the City of London saw couple attend the annual Endeavour Fund Awards to celebrate the achievements of wounded, injured and sick servicemen and women who have taken part in remarkable sporting and adventure challenges over the last year.

Harry and his bride-to-be were greeted by General Sir Nick Carter, the Army's Chief of General Staff, the Royal Foundation's chief executive, Lorraine Heggessey, and David Wiseman, head of armed forces for the foundation