Myleene Klass puts on a brave face at Jubilee Family Festival as it emerges husband Graham Quinn dumped her on her birthday in April

Hiding the pain: Myleene Klass puts on a brave face at Jubilee Family Festival as it emerges husband Graham Quinn dumped her on her birthday in April

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UPDATED:

00:48 GMT, 3 June 2012

She put on a brave face as she took her kids to work at the Jubilee Family Festival in London’s Hyde Park on Saturday but Myleene Klass was hiding a devastating secret.

Friends of the bubbly presenter have revealed her husband of six months Graham Quinn, with whom Klass has two kids, four-year-old Ava and 14-month old Hero, sensationally dumped her on her 34th birthday on April 6.

While the couple – who have been together for 11 years – only married in October following a five-year engagement, Graham is said to have shocked Myleene by suddenly claiming he no longer wanted to be married.

Happier times: Myleene Klass and Graham Quinn looked so in love on their wedding day in October but he shocked the TV presenter by walking out just six months later on her birthday

Happier times: Myleene Klass and Graham Quinn looked so in love on their wedding day in October but he shocked the TV presenter by walking out just six months later on her birthday

A friend of the pair told The Sun: ‘Myleene had no idea that Graham was going to leave her.

‘They only got married a few months ago and she thought everything between them was great.

‘It came as a massive shock to Myleene and she’s heartbroken.’

The way they were: Myleene and Graham cuddle up in London while she was pregnant with their first child

The way they were: Myleene and Graham cuddle up in London while she was pregnant with their first child

Friends are puzzled by the situation and say Quinn has barely been in touch since he cruelly walked out on Myleene’s birthday.

However, despite her heartbreak, Klass is coping admirably and put on a brave face for a family day out with her girls as she presented the Sainsburys Jubilee Family Festival yesterday.

Ava and Hero were dressed in matching beige jackets and pink trousers with Ava sporting patriotic ribbons in her hair while both girls showcased their star credentials with access all areas passes around their necks.

Girls day out! Myleene Klass took her adorable daughters Ava (left) and Hero along as she presented the Jubilee Family Festival in London's Hyde Park today

Putting on a brave face! Myleene took her adorable daughters Ava (left) and Hero along as she presented the Jubilee Family Festival in London's Hyde Park today as it has emerged husband Graham has left her

Busy working mum: Myleene looks after her daughters backstage before making a quick change to perform her hosting duties

Busy working mum: Myleene looks after her daughters backstage before making a quick change to perform her hosting duties with Jon Culshaw

Busy working mum: Myleene looks after her daughters backstage before making a quick change to perform her hosting duties with Jon Culshaw

Showing where her daughters got their impeccable style from, Myleene – who presented the day with Jon Culshaw – started off the day in a casual printed blue dress, flat shoes and a brown coat before changing into a stunning red dress with matching red lipstick later on.

The brunette beauty left her hair flowing loose for the day.

Ever the professional: Myleene is ready for her presenting duties in a gorgeous red dress and clutching her microphone and notes

Ever the professional: Myleene is ready for her presenting duties in a gorgeous red dress and clutching her microphone and notes

The festival, presented by supermarket giant Sainsbury's featured performances from West End musicals Billy Elliot the Musical, The Lion King and international hit War Horse along with Strictly Come Dancing stars including Chelsee Healey, Robbie Savage and former champions Kara Tointon and Artem Chigvintsev.

The fun's over, it's time to get to work. Myleene is all business after she changes into a red dress to take to the stage at the Jubilee Family Festival in Hyde Park

The fun's over, it's time to get to work. Myleene is all business after she changes into a red dress to take to the stage at the Jubilee Family Festival in Hyde Park

The fun's over, it's time to get to work. Myleene is all business after she changes into a red dress to take to the stage at the Jubilee Family Festival in Hyde Park

Myleene’s daughters would no doubt have enjoyed children's favourites Fireman Sam, Angelina Ballerina and Thomas The Tank Engine who also performed.

Motorcycle stunts, parachutists, marching bands and British food and drink stalls were all part of the ticketed event, while a village green featuring traditional games such as tug-of-war was also on site.

Other entertainment ranging from New Zealand Maori haka performers to Harambee African drummers, ensured the Commonwealth countries were all represented.

Putting his dancing shoes back on: Robbie Savage looks thrilled to be performing again as he takes to the stage at the Jubilee Family Festival today

Putting his dancing shoes back on: Robbie Savage looks thrilled to be performing again as he takes to the stage at the Jubilee Family Festival today

Champions: Former Strictly Come Dancing winners and real life couple Kara Tointon and Artem Chigvintsev take to the stage at the Jubilee Family Festival

Champions: Former Strictly Come Dancing winners and real life couple
Kara Tointon and Artem Chigvintsev take to the stage at the Jubilee
Family Festival

Festival organiser Harvey Goldsmith said: ‘We've been working on this festival for about six months and the proof of the pudding is in the eating here.

‘Everyone is having a fantastic time and everything seems to be going smoothly. There is so much going on here, it's hard to get round it all.”

Chelsee Healey looks like she has kept up her dancing since finishing her stint on Strictly

Chelsee Healey looks like she has kept up her dancing since finishing her stint on Strictly

The festival is open again on Sunday from 10.30am to 7pm and Myleene clearly can’t wait to get back.

She tweeted ‘Thanks to everyone that came to Hyde Park today. Let's do it all over again tomorrow. #jubileefamilyfest’

Former Strictly Come Dancing contestants Kara, Robbie and Chelsee show they haven't forgotten any of the moves as they put on a performance with their professional partners

Former Strictly Come Dancing contestants Kara, Robbie and Chelsee show they haven't forgotten any of the moves as they put on a performance with their professional partners

Don't drop me! Chelsee looks slightly apprehensive as she performs a tricky dance move at the Jubilee Family Festival

Don't drop me! Chelsee looks slightly apprehensive as she performs a tricky dance move at the Jubilee Family Festival