Lily Allen flashes her toned midriff in black bralet as she enjoys rare day out with husband Sam Cooper, their daughters... AND ex-boyfriend Seb Chew

By MailOnline Reporter

Published: 18:05 EST, 6 September 2015 | Updated: 05:56 EST, 7 September 2015

Amid fears that her marriage is on the rocks, Lily Allen was seen putting on a united front with husband Sam Cooper at West London’s Notting Hill Carnival.

Although they were enjoying family time with their two daughters Ethel and Marnie, the couple were bizarrely joined by Lily’s ex-boyfriend Seb Chew, whom she dated she dated for over two years before splitting back in 2007.

Turning heads as she passed by, the 30-year-old singer appeared to be in relaxed spirits as she made her way along the crowded streets.

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Big crowd: Lily Allen enjoyed  a rare day out with husband Sam Cooper, their daughters Ethel and Marnie as well as ex-boyfriend Seb Chew (second from the right) at West London’s Notting Hill Carnival

Big crowd: Lily Allen enjoyed  a rare day out with husband Sam Cooper, their daughters Ethel and Marnie as well as ex-boyfriend Seb Chew (second from the right) at West London’s Notting Hill Carnival

She drew attention to herself by flashing her toned midriff in black sports bralet and slouchy grey trousers, while strolling along in blue trainers.

Builder Sam, who the British songstress married in 2011, kept his cool in dark tracksuit bottoms and a blue checked shirt as well as a matching jacket.

Despite wearing their wedding rings, friends close to the pair are allegedly concerned over the status of their four-year marriage.

Smile: Turning heads as she passed by, the 30-year-old singer appeared to be in relaxed spirits as she made her way along the crowded streets

Smile: Turning heads as she passed by, the 30-year-old singer appeared to be in relaxed spirits as she made her way along the crowded streets

United front: Despite wearing their wedding rings, friends close to the pair are allegedly concerned over the status of their four-year marriage

United front: Despite wearing their wedding rings, friends close to the pair are allegedly concerned over the status of their four-year marriage

The low-key couple haven't been pictured together since June and it was recently reported that Lily had signed up for dating apps Tinder and Raya, which specialises in matchmaking for celebrities.

However, a spokesperson recently insisted: 'Nothing has changed in her circumstances.'

During the weekend’s festivities, a witness told The Sun newspaper: ‘They didn’t look like a normal, happy couple. They walked next to each other but with a wide gap. 

Partying: The next day, Lily was pictured holding a suspicious-looking cigarette as she danced on the Party on the Moon stage at Notting Hill Carnival

Partying: The next day, Lily was pictured holding a suspicious-looking cigarette as she danced on the Party on the Moon stage at Notting Hill Carnival

‘There seemed to be barely any interaction,’ the source added. ‘It seemed their priority was their kids.’

Meanwhile, on the second day of the Carnival, Lily was pictured holding a suspicious-looking cigarette as she danced on the Party on the Moon stage.

Dressed in a bright green t-shirt and camo trousers, the popular star enjoyed the live DJ sets, while holding the cigarette.

A representative for Lily declined to comment when contacted by MailOnline. 

'Happy fams': She also took to her social media sites to share pictures of her family, sampling some street food

'Happy fams': She also took to her social media sites to share pictures of her family, sampling some street food

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