Lily Allen heads to Chiltern Firehouse wearing trendy see-through rucksack and killer heels

She has a perhaps unrivalled designer bag collection, but singer Lily Allen was keeping things simple on Friday night when she modelled a throwback transparent backpack.

The 29-year-old displayed her belongings in the on-trend accessory as she arrived at London's trendiest haunt, the Chiltern Firehouse.

Showing off a cigarette lighter, bits of paper and a mobile phone among other things, Lily was joined nightspot by a host of celebrities including her former nemesis, Cheryl Cole.

Style savvy: Lily Allen headed to London's Chiltern Firehouse on Friday night

Lily wore a cropped black hoodie and a grey baggy T-shirt and leggings - but gave her look a grown-up twist in gold metallic Christian Louboutin shoes which were just like Cheryl's.

She wore her new flame red locks in a top knot and had her trademark colourful manicure on display.

Earlier in the day, Lily posted a picture of her mismatched shoes and colourful accessories to her Twitter account, writing: 'Just another day at the office.'

Back to basics: The singer was modellling a see-through rucksack on her back as she headed to the venue

 

Dressing-up: Earlier in the day, Lily posted a picture of her mismatched shoes and colourful accessories to her Twitter account, writing: 'Just another day at the office'

No doubt Lily relished the opportunity to catch up with Cheryl Cole on the night, who was also partying with Simon Cole and Amanda Holden.

In a recent interview with Q magazine, Lily said she regrets her long-running feud with the former Girls Aloud singer, saying: 'I wish that whole thing hadn't happened. I like Cheryl.'

She added: 'She’s good on The X Factor, she’s pretty and she’s got balls. I like women who do well.'

Kiss and make-up: Lily's former nemesis Cheryl Cole was also at the party and wore similar heels to Lily's

The pair first began to feud in 2006 when Lily name dropped Cheryl on the B-side of her debut single, Smile.

Cheryl did not respond well to the track and when asked about Lily by chef Gordon Ramsay on his show, The F Word, the singer called Lily a 'chick with a d***'

Lily then reacted in force as she wrote a scathing open letter to Cheryl on her Myspace page.