Demi Sims puts on a VERY busty display in a black PVC bikini top as she cosies up to on-off girlfriend Megan Barton-Hanson at the We Are FSTVL

Demi Sims had fun with girlfriend and Megan Barton-Hanson on Sunday at the second day of the We Are FSTVL in Upminster.

The former The Only Way Is Essex star, 26, put on a very busty show in a black PVC bikini top that seriously showed off under the bust.

She showed off her toned and tattooed abs while completing the edgy look with a cropped gray denim jacket and matching skirt.

Meanwhile, Love Island’s Megan, 29, nailed ’90s chic when she donned a blue metallic halter top and baggy jeans.

The pair, who rekindled their romance after a long hiatus earlier this year, giggled as they chatted in the VIP section.

Back together: Demi Sims (R) had fun with girlfriend and Megan Barton-Hanson (L) on Sunday on the second day of the We Are FSTVL in Upminster.

Sexy: Former The Only Way Is Essex star Demi (R) put on a very busty show in a black PVC bikini top that seriously showed off under-boobs

Sexy: Former The Only Way Is Essex star Demi (R) put on a very busty show in a black PVC bikini top that seriously showed off under-boobs

They were joined by Love Island’s Billy Brown, Ellie Spence and Lydia Karakyriakou, among others, at the festival, which is sponsored by PrettyLittleThing.

The festival will once again be held at Damyns Hall Aerodrome in celebration of its tenth anniversary and will feature 150 performers over the weekend.

Visitors to We Are FSTVL can expect performances from a wide variety of artists, including big names such as The Prodigy, Annie Mac, Exemple and Nathan Dawe.

They are joined by top DJs including Joel Corry, Fisher, Andy C and Scottish duo LF System.

Another big name in the already monumental line-up is London legend Skepta, who will headline the Solid Grooves stage on Saturday.

Camping has also been added to this year’s festival, meaning revelers don’t have to worry about the dreaded journey home after the festival.

In February, Demi confirmed that she had rekindled her romance with her former flame Megan after splitting two years ago.

The former TOWIE star revealed that she was “buzzing” about having Megan back in her life and was looking forward to seeing what’s to come for the couple in the future.

Saucy: She showed off her toned and tattooed abs while completing the look with a cropped gray denim jacket and matching skirt

Saucy: She showed off her toned and tattooed abs while completing the look with a cropped gray denim jacket and matching skirt

Abs: Television personality Demi showed off her tattoo on her stomach that read, “Je t'aime.  Mon cheri, my dear,

Abs: Television personality Demi showed off her tattoo on her stomach that read, “Je t’aime. Mon cheri, my dear,” which translates from French as, “I like you. My darling, my darling’

Close: The couple, who rekindled their romance after a long hiatus earlier this year, giggled as they chatted in the VIP section

Close: The couple, who rekindled their romance after a long hiatus earlier this year, giggled as they chatted in the VIP section

Love: In February, Demi confirmed that she had rekindled her romance with her former flame Megan after splitting two years ago

Love: In February, Demi confirmed that she had rekindled her romance with her former flame Megan after splitting two years ago

Demi explained how the pair met for the first time in years during a racy OnlyFans shoot and she “knew from then on that we were going to get things going again.”

I speak to Scott McGlynn about his Skin talk of celebrities podcast, Demi admitted that she “could feel” there were still feelings between the pair during the lingerie shoot.

She said, “So me and Meg, we’d obviously seen each other a few years ago. But we were working on a show and in a hurry.

“This was not the way you would normally approach a relationship. Then it ended, and we always connected, whether it was friendly or something more, even if it was friendly, we called, we disappeared, and then we talked.”

Wowza: Demi showed off her gorgeous figure adorned with body art

Wowza: Demi showed off her gorgeous figure adorned with body art

Say cheese: Demi (R) also posed for a photo with sister Franke (L)

Say cheese: Demi (R) also posed for a photo with sister Franke (L)

Figure: Frankie sizzled in a semi-sheer red dress that hugged every inch of her incredible curves

Figure: Frankie sizzled in a semi-sheer red dress that hugged every inch of her incredible curves

Cute couple: Love Island's Mitchel Taylor (R) also attended with girlfriend Ella Barnes (R)

Cute couple: Love Island’s Mitchel Taylor (R) also attended with girlfriend Ella Barnes (R)

Pucker: The duo weren't afraid to pack on the PDA

Pucker: The duo weren’t afraid to pack on the PDA

Saucy: Ella looked sensational in a very tight cut black mini dress

Yes ha!  She completed the look with a wide-brimmed hat and cowboy boots

Saucy: Ella looked sensational in a very tight cut black mini dress

Pose: Fellow Islanders Jessie Wynter (L) and Will Young (R) also attended the satr-strewn event

Pose: Fellow Islanders Jessie Wynter (L) and Will Young (R) also attended the satr-strewn event

Looked Up: Will appeared very excited

Looked Up: Will appeared very excited

She continued, “Then I came back to England and I did a photo shoot with her with OnlyFans, and she’s standing there in her lingerie, and I’m like ‘Omg, what’s going on.’

‘I try to keep it cool while I put on my lingerie. It’s hard when two exes are standing there in our lingerie. We both smiled at each other and I felt it, I saw it.

“We got to be nose to nose and hold each other, and it was just one of those moments where you can feel the energy. I just knew we’d get things going again.”