Braless Alexa Chung flaunts her willowy frame and flawless decolletage in a delicate plunging polka-dot gown at Met Gala.

It is known as the Oscars of the fashion world with stars descending on the Metropolitan Museum of Art in an array of dazzling and sometimes shocking frocks. 

And braless Alexa Chung certainly lived up to expectations when she swept into the Met Gala on Monday in a plunging polka dot halterneck gown. 

The beauty, 33, showed off her willowy frame in the elegant dress which revealed her flawless decolletage and sculpted shoulders. 

The beautiful gown cinched Alexa's tiny waist and she appeared statuesque as she arrived at the event organised by Anna Wintour, the editor-in-chief of American Vogue. 

Alexa, who is a contributing editor for the fashion bible, accessorised her delicate dress with a black silk clutch. 

She ensured that all eyes were on the ethereal gown by rocking a natural look with minimal make up and styling her brunette tresses into a fuss-free wavy shoulder-length bob with a fringe.

But she did add an element of glitz with a pair of dangling diamond earrings.

It is not the first time that Alexa has turned heads at the iconic fashion event. She attended last year in a plunging, bejewelled cropped catsuit which again showed off her slender figure.  

The theme of this year's Met Gala is Rei Kawakubo/Comme des Garçons, with the focus being on the avant-garde designer's technique with silhouettes, draping and fit. The 74-year-old Japanese fashion legend is the second ever living designer to be the sole subject of the Met's fashion exhibit since Yves Saint Laurent in 1983. 

In 1946, the gala was launched, in a bid to raise money for the Met’s Costume Institute. This year's lucrative fundraiser will see less that 600 glamorous attendees appear. Tickets market for up to $30,000, while tables cost $275,000.

Guests must be personally approved by Anna Wintour, with former attendees including Madonna, Kim Kardashian, Anne Hathaway, Kanye West and Rihanna.

Earlier in the day Alexa proved she didn't need a red carpet to flaunt her style as she strolled through Manhattan in a chic ensemble of a striped jumper and cropped jeans.

The model and TV presenter donned the cosy-looking knit which was grey with elegant green and white stripes.

She teamed her warm jumper with cropped baby blue jeans which showed off her long and lean legs.

She finished her outfit with a pair of Chanel-style monochrome heels - cream with a black toe - which added a hint of Parisian chic to her ensemble. 

Alexa carried a canvas tote bag over her shoulder and shielded her eyes with a pair of vintage tortoise shell cat-eye sunglasses. 

She styled her brunette locks into a casual shoulder-length bob as she pounded the pavements of the Big Apple.  

The fashionista was self deprecating when she was asked about her status as a style icon by Stylist magazine. 

She told the publication: 'I feel honoured to be given that term because clothes are something I love, and style is something I think about and enjoy. 

'But equally, I'm not so deluded to think I'm one of a kind and it couldn't have been someone else if their stars had aligned.'