Montana Brown showcases her blossoming bump as she shares snaps to mark her ... trends now

Montana Brown showcased her blossoming bump on Tuesday.

The former Love Island star, 27, took to her Instagram to share the snaps marking the 18th week of her pregnancy.

Montana, who is expecting her first baby with boyfriend Mark O'Connor, was all smiles as she posed in white underwear and cradled her tummy lovingly.

For the relaxed photos, taken in a bedroom, she also posted a close-up photo of her growing belly. 

She wore her brunette locks in a loose up do, opting for no makeup and letting her natural beauty shine through.

Montana captioned her post: '18 weeks ft my mysterious belly button which was pierced for 6 months at age 16 and the scar never disappeared.'

It comes after Montana praised natural birth control for 'changing her life' on Monday as she discussed her fertility journey while sharing a sweet video.

Taking to her Instagram, Montana explained how her decision to come off hormonal birth control two years ago taught her 'so much' about her cycle.

In the montage video, the reality star included photographs of herself holding up a temperature monitor, used to track a woman's cycle.

She finished it with a clip of herself happily displaying her baby bump while on a beach with her boyfriend.

Montana penned alongside her video: 'New year reflections. It was almost two years ago that I shared my natural birth control journey with you.

'I remember the feeling of getting off hormonal birth control - and feeling I was in control of my body again - I was so grateful for finding naturalcycles.