Heidi Montag showcases her bump in floral print string bikini during beach day in Hawaii

She is awaiting the arrival of baby number two.

And Heidi Montag put her blossoming bump on full display as she enjoyed another beach day in Hawaii on Tuesday.

The Hills star, 35, wowed in a tropical print string bikini as she basked in the sunshine.

The mom-to-be couldn’t have looked any happier as she gently placed her hands upon her burgeoning midsection with the wind whipping through her blonde hair.

Walking barefoot along the shore, she beamed with happiness and joyfully shot her arms into the air.

She appeared to have a touch of makeup gracing her radiant complexion, with a peachy glow and hint of eyeshadow complimenting her face.

Heidi gave fans more of a behind-the-scenes look into her pregnancy on social media, where she revealed she had been lathering coconut oil onto her belly to avoid stretch marks.

Beach babe! The Hills vet looked stunning as she strolled barefoot by the ocean blue 

Yay! Montag flashed a huge grin and delightedly shot her arms into the air 

‘I have been using coconut oil. It’s not as expensive, it’s organic… Yeah, this belly is getting really big!’ she exclaimed.

Subsequent snaps showed more of her Hawaiian getaway with husband Spencer Pratt, whom she met while filming The Hills and married in 2008. 

She shared a boomerang clip of them sharing a smooch by the ocean. ‘I love you @spencerpratt,’ she wrote in the clip.

Sharing tips: Montag shared with fans she had been using coconut oil to avoid getting stretch marks during her pregnancy 

XOXO: The MTV alum shared a kiss with her husband Spencer Pratt, whom she has been with since their days on The Hills

Heidi also posted a glowing snap of her posing on the beach at sunset with her hand resting on her belly.

‘One of our last nights and I am so sunburned,’ she said.

In June, Heidi and Spencer announced they were expecting their second child, later revealing they’re having a boy.

She initially thought she was having a girl and the blue cake at her gender reveal surprised her.

‘My whole intuition was off,’ she admitted while chatting with Entertainment Tonight.

She continued, ‘Growing up I always wanted boys and then recently I kinda started thinking, I don’t know, I kinda want a girl [to have] one of each. For Gunner, he really wants a brother so, you know, ultimately I want what would be best for him and his life.’

Sun-kissed: Montag gently placed her hand on the belly as she soaked up the sunset 

We all scream for ice cream! She treated herself to a delicious ice cream during her trip