'Happy 420!' Lily Allen rings in annual cannabis celebration day with ...

Lily Allen has always been candid and unashamed about her drug use. 

And the songstress was once again feeling open and honest about her past as she took to Instagram on Saturday, April 20 to share a range of throwback snaps of herself smoking weed, as well as an old news article about her drug-fuelled antics.

The 33-year-old Smile hitmaker captioned the collection of photographs: 'Happy 420,' followed by a heart emoji. 

420 is slang for smoking cannabis around the time 4:20 p.m. and also refers to cannabis-oriented celebrations, which take place annually on April 20. 

Celebrations: Lily Allen, 33, took to Instagram on Saturday, April 20 to share a range of throwback snaps of herself smoking weed, as well as an old news article about her drug-fuelled antics

Celebrations: Lily Allen, 33, took to Instagram on Saturday, April 20 to share a range of throwback snaps of herself smoking weed, as well as an old news article about her drug-fuelled antics

Within the batch of throwback photographs, Lily can be seen relaxing with a spliff whilst spending time aboard a yacht with supermodel Kate Moss.

Other shots show the Alfie songstress partying away with a joint in hand at various festivals.

Lily's 420 celebration comes after she took to Twitter on Thursday to share a throwback snap to her first performance at Coachella in 2007, where she tried 'Cali weed' for the first time.

The singer looked fresh-faced in the shot while adding the caption: 'Me at Coachella 2007 20 mins before i smoked Cali weed for the first time and forgot EVERY SINGLE word of my set. Still killed it.'

Joining in the celebrations: The 33-year-old Smile hitmaker captioned the collection of photographs: 'Happy 420,' followed by a heart emoji

Joining in the celebrations: The 33-year-old Smile hitmaker captioned the collection of photographs: 'Happy 420,' followed by a heart emoji

Gal pals: Within the batch of throwback photographs, Lily can be seen relaxing with a spliff whilst spending time aboard a yacht with supermodel Kate Moss

Gal pals: Within the batch of throwback photographs, Lily can be seen relaxing with a spliff whilst spending time aboard a yacht with supermodel Kate Moss

Lily looked stunning in the 12-year-old shot as she posed while sporting her then-trademark gold, bamboo hoop earrings and a delicate chain. 

Her raven tresses were tied into a messy bun while she fought off the searing LA heat by sporting just a teal strappy top to soak up the sun. 

When Lily took the stage later on, she was seen to be slightly bleary-eyed and sweating while, by her own admission, high on drugs.

Last year, Lily came under fire for glamourising drug-taking after admitting she snorted a line of ketamine at an awards ceremony.

Happy days: Lily Allen again feeling open and honest about her party past as she took to Twitter on Thursday to share a throwback snap to her first performance at Coachella in 2007, where she tried 'Cali weed' for the first time

Happy days: Lily Allen again feeling open and honest about her party past as she took to Twitter on Thursday to share a throwback snap to her first performance at Coachella in 2007, where she tried 'Cali weed' for the first time

Belting it out: The 33-year-old Smile hitmaker looked fresh-faced in the shot while adding the caption: 'Me at Coachella 2007 20 mins before i smoked Cali weed for the first time and forgot EVERY SINGLE word of my set. Still killed it'

Belting it out: The 33-year-old Smile hitmaker looked fresh-faced in the shot while adding the caption: 'Me at Coachella 2007 20 mins before i smoked Cali weed for the first time and forgot EVERY SINGLE word of my set. Still killed it'

Belting them out: When Lily took the stage later on, she was seen to be slightly bleary-eyed and sweating while, by her own admission, high on drugs

Belting them out: When Lily took the stage later on, she was seen to be slightly bleary-eyed and sweating while, by her own admission, high on drugs

The singer described how she passed out and had to be carried to a cab after snorting the horse tranquiliser, which she says she mistook for cocaine.

Allen made the revelation in response to a question posted on Twitter, which asked '[What is] the best reason you’ve been kicked out of an event, building or group.'

Following her confession, social media users hit out at the pop star, saying her comments were 'disappointing' in light of her position as a role

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