Alexa Chung puts on a leggy display in a sexy silk co-ord as she joins models Adwoa Aboah and Emily Ratajkowski at Victoria Beckham's Mango launch event in Spain to celebrate her first foray onto the high street

Alexa Chung joined fellow models Adwoa Aboah and Emily Ratajkowski at Victoria Beckham's Mango clothing collection launch event in Spain on Tuesday night.

The fashion designer, 50, has only just finished celebrating one of her most important birthdays, but showed no signs of slowing down after jetting to Barcelona to launch her new collaboration with Spanish high street brand Mango.

Her first foray onto the high street, the new collection is priced at just a tenth of the price of Ms Beckham's own label after it's said she wants to become 'more relatable'.

A transparent black silk dress is priced at £210 and a white suit blazer is priced for £180. She has also launched a range of accessories including £120 leather sandals, £140 high heels and a £60 handbag.

During the celebratory evening, Alexa, 40, put on a leggy display in a sexy white silk co-ord as she shared a glimpse getting ready for the party held near Girona on the Costa Brava.

She teamed the skimpy co-ord with a smart black blazer, sheer tights and stilettos to boost her height.

Alexa penned in the caption as she got her glam on for the evening out: 'Boop! In my outfit already. The early bird catches the @victorisbeckham @mango collection...' 

After arriving at the event she posed next to some mannequins wearing some pieces from the collection which went live on Tuesday.

After she enjoyed a swanky dinner and shared a video to her Story of Emily and  Adwoa sat the table opposite her - who both looked smart in suits.

Earlier in the day Victoria arrived in Girona via private jet as she got ready to head to the event on the day of the launch of her new clothing collaboration with Spanish brand Mango.

She dressed casually in all-black as she disembarked the plane and made her way into the airport - with an assistant carrying her crutches for her as she continues to recover from a broken foot.

Her team were seen leaving the jet with various garment bags ahead of the important night.

The Spice Girl is focusing on her high street collaboration with Mango, her first foray into the affordable market.

Her trademark slip dresses, knitwear and tailoring have been reacreated at a more purse-friendly price point, compared to the £90 she charges for a t-shirt from her eponymous label, which was launched in 2008.

Victoria revealed in an interview with WWD that she had decided to work with Mango to 'speak to a wider audience in a way that feels relevant to my brand and retains my aesthetic and DNA'.

And in an interview with Vogue last week she insisted she hasn't compromised on quality, promising that 'when you invest in one of these pieces, you won't just wear it for one season, they'll be pieces you'll keep in your wardrobe and wear time and time again.'

Calling the collection 'timeless' Victoria gushed: 'I think people will be very surprised by how strong the fashion message is in every single garment.'

Fans were quick to share their excitement about the collection with many claiming on Victoria's Instagram post to have already bought some items.

'I love the entire collection, just placed my order,' one person commented.

Another said: 'It's absolutely stunning, dresses are so feminine and elegant️, just got one!'

And industry experts agree that a move to the high street is exactly what designers like Victoria should be focusing on.

Speaking to Harpers Bazaar this week Dr Bethan Alexander, Reader in Fashion Retailing & Marketing at the Fashion Business School, London College of Fashion said there are huge benefits to both the designer and the high street shops.

'A designer collaboration is a viable opportunity to increase market share while the designers maintain their market position,' she explained. 

'The luxury market is facing unprecedented challenges right now, so it's especially important. Maintaining sales is difficult, but the quick, relatively easy cash injection from collaborations is appealing.'

Last weekend the Spice Girl celebrated her 50th birthday alongside her family and friends in the South of France and London.

Husband David Beckham, 48, jetted Victoria, her four children and her parents out to France on Thursday for dinner at the famous La Colombe d'Or.

And on Saturday she partied the night away with her A-lister friends including Tom Cruise, 61, and the rest of her fellow Spice Girls as they gathered at London's private members club Oswald's to celebrate.

The Mail on Sunday revealed Victoria called in 'the mother of all returns' after the collapse of fashion group Matches.

Victoria s team at her own label demanded that the online retailer send back all of their summer stock that she sent to them in March – only to learn days later the company had collapsed.

Victoria Beckham X Mango will be available to shop from 23 April at Mango.com.