The end of the rainbow! Lily Allen's multi coloured locks are fading fast as she jokes around with friends at Stella McCartney's London fashion studio

She dyed her locks for 'one last hurrah' before she turned 30, and now her milestone birthday has been and gone it looks like Lily Allen needs a hair do-over.

The singer was spotted joking around with some friends in Notting Hill on Wednesday, with her once bright rainbow coloured locks looking as though they are fading fast.

Dressed down for a trip to her pal Stella McCartney's fashion studio, Lily was in great spirits as she hung out with mates.

Scroll down for video 

Oh dear: LThe star decided to dye her locks for 'one last hurrah' before she turned 30 last week, but now her milestone birthday has been and gone, it looks as though the star may need a hair do makeover

Loving life in LDN: A dressed down Lily Allen was spotted hanging out with some friends in Notting Hill on Wednesday afternoon

Lily looked cute in a pair of skinny jeans paired with some white platform trainers. 

The Sheezus star added a quirky top which was half grey sweatshirt, half checked shirt.

She went makeup free for her trip to the McCartney fashion emporium, while her short hair was tied back into a messy bun.

Joking around: The singer looked cute in her platform trainers and skinny jeans as she hung out with some friends in Notting Hill on Wednesday afternoon

Joking around: The singer looked cute in her platform trainers and skinny jeans but her rainbow coloured hair is fading fast

Pre birthday fun: Lily showed off her brightly coloured locks three weeks ago, telling fans it was a 'last hair hurrah' before her 30th

Pre birthday fun: Lily showed off her brightly coloured locks three weeks ago, telling fans it was a 'last hair hurrah' before her 30th

Lily took to Instagram last month to show off her new watermelon-coloured locks as she indulged in 'one last hurrah' before her 30th birthday last weekend.

The singer's picture showed the starlet with pink and neon green hair and was captioned: 'Not long till I'm 30 , one last hurrah on the hair front. watermelon hurr dun care.'

Three weeks on though, and it might be time for another colouring session, with Lily experimenting with a number of different styles and colours in recent years.

Keeping busy: Lily turned 30 last weekend but seemed to have a low key celebration

Keeping busy: Lily turned 30 last weekend but seemed to have a low key celebration

Finishing touch: The fashion lover was carrying her £2,100 Chanel graffiti print backpack
Finishing touch: The fashion lover was carrying her £2,100 Chanel graffiti print backpack

Finishing touch: The fashion lover was carrying her £2,100 Chanel graffiti print backpack

While she went casual for her fashion trip on Wednesday, the star did show off her style credentials, slinging the famous Chanel graffiti print backpack on as she headed out.

The distressed designer backpack, which retails for £2,100, was the It bag of last summer with the likes of Kristen Stewart and Khloe Kardashian all carrying it.

Lily is a huge fan of Chanel, starring in a campaign for the fashion house and enlisting Karl Lagerfeld to design her a £200,000 couture gown for her wedding reception in 2011. 

It's the Littlest Things: Lily broke out into giggles as she enjoyed a day out with her mates

It's the Littlest Things: Lily broke out into giggles as she enjoyed a day out with her mates

What's next? Lily is back home in London after an extended trip to Los Angeles where she has been recording music

What's next? Lily is back home in London after an extended trip to Los Angeles where she has been recording music