Headed for the jailhouse? Cody Simpson celebrates turning 20 by dancing to Elvis Presley with a beer in hand... despite not having reached the legal drinking age in United States

By Josh Hanrahan For Daily Mail Australia

Published: 02:58 EST, 12 January 2017 | Updated: 04:19 EST, 12 January 2017

He might now be 20, but that doesn't mean the beer in Cody Simpson's hand is legal.

Upon reaching the milestone age on Thursday, Simpson took to Instagram to share a video of him singing Elvis Presley's 'Jailhouse Rock' with his 3.2 million followers.

And while his performance was impressive, the jailhouse may just be where Simpson ends up should his video be seen by Police in Los Angeles - where the legal drinking age is 21. 

'Growing older but def not up,' the talented singer wrote alongside the video.

Channeling his inner Elvis, Simpson sang in a bluesy voice and showed of his dance skills, pulling off moves he made famous during the 1950s and 60s. 

Simpson's efforts drew rapturous laughter from a girl friend behind the camera, while a male mate joined in the performance.

'The King': Cody Simpson has taken to Instagram to share a video of him dancing and singing along to Elvis Presley as he celebrated is 20th birthday with friends

Rock n roll: Despite not being 21, the legal drinking age in the United States, Simpson enjoyed a beer as he danced the night away with friends to Elvis' classic hit 'Jailhouse Rock'

American idol: Just days earlier Simpson paid homage to Elvis with a number of photos and videos uploaded to Instagram

Throughout his performance the pop star held a bottle of beer in his hand, despite not being able to legally drink in his adopted home of Los Angeles. 

Regardless he has regularly been seen enjoying a drink when out and about in the US.

In the lead up to his birthday, Simpson shared a number of photos and videos paying homage to his idol Presley.

Presley, who died in 1977, would have celebrated his 82nd birthday just three days before had he still been alive.

In front of a picture of Elvis, Simpson posted this video with the caption: 'There will never be another you'

'Steezy as you please! Happy birthday Elvis, hell yeah the king is a Capricorn too!' he wrote next to one Instagram photo.

He then a video of him playing the guitar and singing with: 'There will never be another you'. 

Simpson, who formally dated supermodel Gigi Hadid, rose to prominence as a youngster for his long blonde hair and impressive voice.  

Throw back: Wearing a black leather jacket and with his hair slicked back, Simpson shared this photo to Instagram

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