The 'Who You Are' singer bares all in the video for the upbeat ballad which is taken from the soundtrack to Silver Linings Playbook starring Bradley Cooper and Oscar-nominated actress Jennifer Lawrence.

24-year-old Jessie - who sports long dark hair in the promo - is seen sitting on a chair while images from the romantic comedy are projected onto her naked body.

The singer also wears a sequinned minidress for final scenes in the video, showing off her new natural look.

Jessie took to her Twitter page to laugh off the nudity after posting a link to the video on the social networking site.

She exclaimed: "Naaakkkeeedneeessss lol (sic)."

Jessie is currently working on the follow-up album to her hugely successful debut release Who You Are, although there are currently no details as to when her second studio offering will hit shelves.

Much talked-about movie Silver Linings Playbook is released in cinemas from today, and tells the story of two strangers who form an unexpected bond.

Many celebrities and popular figures take stands against the unethical treatment of animals and Jessie J has now joined the ranks, writing (November 16):

"Ugh seeing so many people wearing real fur.. #Nothanks #winterwardrobenono's"

When one of her fans suggested she takes part in PETA's anti-fur campaign, she replied by saying: "I should right."

The sensation also told her 6.2 million followers that the reason she hasn't been as active on the social networking site as usual is because she's committing most of her time and energy to her forthcoming new album:

"I know I'm distant. But I'm really in my album zone. Making it fantabalouso! Its a detailed process and I won't rush it :) #music #art"

Watch her stunning Manhattan subway performance of 'Who You Are' below:

As previously reported, 37-year-old Philip Sherriff died in April after being stabbed in the neck with a bottle at a BlackBerry event in London.

26-year-old Ashley Charles, from Leicester, was charged with the murder and the trial has started at the Old Bailey.

The court heard that the accused apparently told a bouncer on the night that said he "wished he had not done that".

Charles is accused of stabbing Sherriff with a broken glass bottle at the bar of the Pulse nightclub in Southwark after a row broke out. He denies the murder.

The trial continues.

It was reported over the weekend that the vocal star has had her first child with partner Simon Konecki.

It is said she gave birth to a baby boy "last week" as Adele settles into life as a new mother.

Jessie J, who is friends with the 'Rolling In The Deep' singer, tweeted yesterday (October 21) a message of congratulations to Adele, saying:

"Congratulations @OfficialAdele on your baby boy!! Amazing ♥."

Adele confirmed news of her pregnancy earlier this year on her official website, adding that she and Konecki were "delighted". She said at the time:

"I'm delighted to announce that Simon and I are expecting our first child together. I wanted you to hear the news direct from me, obviously we're over the moon and very excited but please respect our privacy at this precious time. Yours always, Adele xx."

The singer is currently out in the US to work on the follow-up to her hit 2011 album 'Who You Are' and she has been taking to Twitter to keep her fans updated.

She commented on rumours she had heard that suggested that she was looking to enter wedlock, tweeting:

"Apparently I'm engaged. Would love to meet this person I'm supposedly marrying.... #rollseyes."

Jessie J has previously been romantically linked to fellow British music star Tinie Tempah.

The 'Domino' singer meanwhile appeared to have a studio mishap today (October 19), tweeting along with a photo:

"Just fully fell over in the studio and dived across the floor! I cried with laughter hahaha #bruise."

The vocal star is currently in the US penning the follow-up to her popular 2011 debut album 'Who You Are'.

She has been keeping fans updated with her progress on Twitter and last night (October 17) she said that she was in the studio where she wrote tracks like 'Domino' and helped write Miley Cyrus's 'Party In The USA'.

The Voice UK coach hinted that more hits could be on the way this time round too. She said:

"I'm in the studio where 'Party in the usa' 'Abracadabra' 'Price Tag' and 'Domino' were all written! I think we may have done it again! Wah!"

The singer meanwhile recently revealed that she had been working with the "dream team" of Sia and production outfit Stargate in the studio.

In a post uploaded to her official Twitter page last night (October 4), the 'Do It Like A Dude' songstress explained that she is so excited to have secured studio time with the Australian star and duo who produced Katy Perry's 'Firework' and Rihanna's 'S&M':

"Stargate + Sia + me + studio + writing + production + singing + living #livingthedream"

Legendary songwriter Diane Warren, who penned Aerosmith's 'I Don't Want To Miss A Thing', also tweeted: "Jessie J is f**king singing her ass off right now!!!!"

Earlier this week, Jessie J admitted that she's keen to also collaborate with Trey Songz and Ed Sheeran: "Trey's cool man, we talk, he's a really cool guy. I definitely 100% want to work with him. Whether he'll be on [my new] album or not is often not up to us because it's about timing and stuff."

"But I'm actually going to LA soon for quite a long time, so I'm hoping that he can be there at some point in the studio while I'm there and we can sing together."

Jessie J has previously spoken out about what a great mother she thinks the 'Set Fire To The Rain' superstar will be and told Capital FM:

"Forget all the music stuff for a minute and just say from a girl to a girl, from Jessie to Adele – I just hope that she's alright and she's enjoying about to become a mother. She's going to be a great mum."

She has now explained that she hopes she can pick out a present that will be practical:

"I need to go and get her a gift for the baby. I want to get her something she needs - like a steriliser or something."

Jessie J also added to Elle magazine that while they were at the BRIT school together they didn't spend a lot of time in each other's company: "She was really nice but I was singing '42nd street' on the other side of the building and she was one of the cool kids."

The US R&B star previously expressed his desire to work with the 'Domino' singer, addressing her directly during a radio interview about his wish to hook up.

Jessie J has now responded to the invitation - and it looks good for Songz. She said:

"Trey's cool man, we talk, he's a really cool guy. I definitely 100% want to work with him."

She continued: "Whether he'll be on [my new] album or not is often not up to us because it's about timing and stuff. But I'm actually going to LA soon for quite a long time, so I'm hoping that he can be there at some point in the studio while I'm there and we can sing together."

The vocal star is in the throes of making the follow-up to her successful debut album 'Who You Are', which spawned hit singles such as 'Price Tag' and 'Do It Like a Dude'.

Speaking to Capital FM, the Voice UK coach said that she has one song in mind for the new record that would work as a duet.

The singer added that Sheeran could fit the bill for the coming together of musical minds. When asked if she might be working with the singer-songwriter in the future, Jessie J replied:

"It looks like it's a possibility. I have a song that I love, that I wrote a little while ago that I think will be an amazing duet."

She added: "So I'm hoping if he likes it we can record it together."