She rose to prominence after being pictured with Tyga in Cannes last year.
The Instagram model, 22, slipped her curves into a khaki ʙικιɴι as she cosied up to Tom, 28, while they filmed a video on the yacht.
Making the most of her ample cleavage, she squeezed it into a triangle ʙικιɴι top, flaunting her washboard stomach in a pair of low-cut ʙικιɴι bottoms.
Showcasing her shapely legs, the low-cut thong emphasised her curves and she opted to go barefoot on the yacht with Tom ensuring she didn’t fall.
Covering her ensemble with a sheer black chiffon kaftan, she put on a glamorous display for the cameras.
Wearing her raven-dyed hair in a French braid, she threw a variety of poses, before putting on an affectionate display with the DJ.
The duo then jumped off the side of the boat, as they filmed further fun scenes.
And changing into a second ensemble, she opted for a tropical-print thong ʙικιɴι,
Wearing her hair in a sleek low bun, she covered her outfit with a white vest as she posed for further takes.
Meanwhile Tom cut a muscular figure, showing off his tattoos in a pair of low-slung black swimming trunks.
Demi first got a taste for the limelight when she was chosen to be part of the Taz’s Angels at its peak in 2015 after rising to fame through her Instagram account.
In a previous interview with The Sun, she revealed: ‘I’ve had Instagram since I was 18. Posed for selfies and pictures and it just grew from like 60,000 to 200,000 to a million to 3.2million now.
‘In school I was quite popular on MySpace and that kind of followed on to Instagram. It was really weird when people started recognising me and stuff on the street. I just got used to it.’
Confident in her Sєx appeal, the former beauty student claimed her curvaceous figure rivals the Kardashians in a more recent interview with The Sun.
The model told the publication: ‘I have an amazing life travelling the world and showing off curves to rival the Kardashians.
‘I love the best parties, yachts and fast cars — but deep down I’m just a kid from Sutton Coldfield who got lucky.’
Meanwhile Tom has recently been caught up in a furore, after it was revealed on Katie Price’s new show that the duo had been texting each other.
Recalling the moment Katie’s husband Kieran Hayler discovered she had been texting DJ Tom, he confessed: ‘I took her phone off her and as I took it she grabbed it back and deleted everything on her phone.
‘Then she left it on the front of the car, and on the screen was a message from Rebecca Botox Manchester, but the WhatsApp picture was of Tom Zanetti.
‘She’d changed his name to a woman’s name so I wouldn’t notice.’
But Katie showed little remorse for her actions, saying: ‘Do I feel bad? No I don’t really, because of what Kieran did to me.
‘At the end of the day I haven’t done anything with him. Not like Kieran did to me – cheated on me and s**gged two of my best friends.’
However this week Tom appeared to distance himself from any involvement, telling the Sun he wanted nothing to do with the mother-of-five following his brief appearance on her show.
‘The TV show was just a meeting point to discuss music.
‘We are not working with her musically on anything else now or in future. He was just a feature on an episode or two.
‘Her new track is nothing to do with us,’ he added.
