Lily James looked typically chic as she arrived at the Vogue 100 x Erdem dinner at the National Portrait Gallery during London Fashion Week on Monday.

The actress, 34, was joined by Billie Piper, Alexa Chung and Erin O'Connor who all looked glamorous as they arrived at the lavish event.

Lily flashed her washboard abs in a black crop top, teamed with a polka dot cropped blazer and skirt.

She boosted her height in a pair of stilettos and styled her brunette locks up in a messy bun. 

Meanwhile, Billie donned a stylish blue denim jacket and maxi skirt co-ord, teamed with white leather nee-high boots.

Alexa turned heads in an eye-catching yellow maxi dress, teamed with sheer tights and heels. 

Meanwhile, Erin looked elegant in a figure-hugging green embellished dress and leather knee-high boots.

Gugu Mbatha-Raw showed off her incredible figure in a green skin-tight gown as she arrived at the venue. 

Lily recently gave fans a glimpse at her week away with pal Poppy Delevingne and another friend at the Sha Wellness Clinic in Alicante, Spain, last month.

The star took to Instagram to share a number of pictures from her trip, including one of the trio each wearing white dressing gowns as they sat in front of a beautiful view.

Lily captioned her post: 'What a wonderful week. I feel totally rejuvenated - thank you to all the doctors & therapists who so kindly took care of me.

'And I got to do it with two of my besties and the BEST girls. It was so special. A week to remember - beyond grateful.'

In her romantic life, the actress reportedly rekindled her relationship with rocker Michael Shulman this summer, just five months after they split.

Lily was seen backstage as she supported Queens of the Stone Age bassist Michael, 37, during his band's performance during Glastonbury Festival in June.

The couple were said to have split in February after growing apart following a two-year romance.

A source told the Mirror: 'Lily and Mikey have always adored each other and have lots of fun together.

'Time apart has made them realise how much they missed each other and now they're picking up where they left off.

'They looked close at Glasto. Neither is putting any pressure on it – they're just seeing how it goes.'