Montana Brown puts on a loved up display with fiancé Mark O’Connor at The Little Mermaid UK premiere

She is expecting her first child with fiancé Mark O’Connor.

And Montana Brown showed off her blossoming bump when she walked the red carpet alongside her beau at the London premiere of The Little Mermaid on Monday.

The former Love Island star, 27, looked sensational in a graphic print dress that boasted a strapless neckline and sassy cutouts.

Montana teased a hint of her figure via a thigh-high slit as Mark lovingly placed his hands on her growing belly.

The stunner wore a radiant makeup palette for the outing and tied her dark locks back in a chic chignon.

Expecting: Pregnant Montana Brown, 27, showed off her baby bump as she put on a beloved show with fiancée Mark O’Connor at the UK premiere of Little Mermaid in London on Monday

Gorgeous: The former Love Island star looked sensational in a graphic print dress that boasted a strapless neckline and sassy cutouts

Gorgeous: The former Love Island star looked sensational in a graphic print dress that boasted a strapless neckline and sassy cutouts

Meanwhile, Mark was a low profile figure in a black T-shirt that he paired with matching trousers and boots.

Directed by Rob Marshall, whose previous films include Chicago and Memoirs Of A Geisha, the new remake of The Little Mermaid has a brilliant cast.

Halle Bailey, Hamilton alum Daveed Diggs, former child star Jacob Tremblay, Crazy Rich Asians actress Awkwafina and comedy icon Melissa McCarthy are all part of the project.

It comes after Montana showed off her huge diamond engagement ring when she shared an insight into her partner’s proposal.

She took to Instagram late last month to share a slew of sweetheart snaps with her fiancé from the day of their engagement.

Montana announced that former rugby player Mark had proposed to her in April during her exotic babymoon.

Now Montana has provided another glimpse of their special day as she packed the PDA with Mark and showed off her glittering oval engagement ring.

In an instant, Montana looked effortlessly stylish in a blue striped shirt as she placed her hand lovingly on Mark’s face and showed off her gorgeous diamond band.

Concerned!  It comes after Montana showed off her huge diamond engagement ring when she shared an insight into her partner's proposal

Concerned! It comes after Montana showed off her huge diamond engagement ring when she shared an insight into her partner’s proposal

Loved up: Montana gave another glimpse of their special day as she sat on the PDA with Mark and showed off her sparkly oval engagement ring

Loved up: Montana gave another glimpse of their special day as she sat on the PDA with Mark and showed off her sparkly oval engagement ring

The pregnant star swept her brunette locks back into a low ponytail and flaunted her natural beauty as she appeared to be going makeup free.

Mark went shirtless in the sultry snap and smiled hugely as he shielded his eyes with round sunglasses and wore a black baseball cap.

In an instant, Montana got on the PDA with her new fiancé as they shared a kiss as she flashed her sparkler again.

Montana also shared a photo of Mark popping the question as they enjoyed an evening meal together on the beach.

1682770288 571 Pregnant Montana Brown shows off her huge diamond engagement ring

Smooch: Montana provided another glimpse of their special day as she sat on the PDA with Mark and showed off her sparkly oval engagement ring

Smooch: Montana provided another glimpse of their special day as she sat on the PDA with Mark and showed off her sparkly oval engagement ring

She held out her hand to show off her huge glittering ring as Mark sat across from her, smiling broadly.

Mark wore a blue hoodie, with Montana mocking his outfit in her caption, writing, “Stuck with me now… HA, also only Mark would wear a hoodie on engagement day.”

The happy couple are currently expecting their first child together and left for their babymoon earlier this month before their baby boy arrived in June.

Mark took the opportunity to pop the question to his girlfriend during their vacation, with Montana taking to Instagram to reveal their huge milestone.

She posted a black and white photo of the sweet moment she said “yes,” showing Mark on one knee as he asked the all-important question.

Mermaid: The Little Mermaid is the beloved story of Ariel (Halle Bailey, pictured), a beautiful and feisty young mermaid with a thirst for adventure

Mermaid: The Little Mermaid is the beloved story of Ariel (Halle Bailey, pictured), a beautiful and feisty young mermaid with a thirst for adventure

The couple had been enjoying a private evening meal at a table for two in the middle of the picturesque beach when Mark proposed romantically.

The pair were surrounded by fire lanterns as Mark got down on one knee, and the moment was captured on camera.

Montana looked fabulous in a midi dress and wore her brunette locks slicked back in a ponytail as she gazed lovingly at her partner.

Mark looked casual in a black shirt and shorts as he knelt down and handed a ring to his pregnant girlfriend.

It’s another huge milestone for the couple, who are currently expecting their first child together, a baby boy.