Cheeky! Natalie Roser shares a racy snap of her G-string clad derriere... after reportedly splitting from gym owner fiance Dan Adair

She spends most of her time posing in scant attire on the beach. 

But bikini model Natalie Roser, 26, gave fans more than they bargained for this Tuesday when she shared an extremely racy Instagram story update featuring her barely-covered derriere. 

In the intimate video, Natalie is seen posing in a G-string bikini bottom with a sunscreen smiley face drawn on her posterior.

Scroll down for video 

Bottoms up! Bikini model Natalie Roser, 26, gave fans more than they bargained for this Tuesday when she shared an extremely racy Instagram story update featuring her barely-covered derriere

'Cheeky', the body-confident blonde wrote in the caption.

Natalie, who is rumoured to be single after splitting from her personal trainer fiance Dan Adair, would surely have no trouble garnering male attention with her saucy updates.  

Last week, Natalie all but confirmed the split rumours when she unveiled her brand new personal trainer, Christian Miranda.

She's not shy! 'Cheeky', the body-confident blonde wrote in the caption

She won't be single for long! Natalie, who is rumoured to be single after splitting from her personal trainer fiance Dan Adair, would surely have no trouble garnering male attention with her saucy updates 

What a coincidence! Natalie has all but confirmed rumours that she has split from her personal trainer fiance Dan Adair by unveiling her brand new trainer, Christian Miranda on Friday

Taking to Instagram, the bikini bombshell shared a sweaty post-workout snap while posing alongside her buff exercise aide.

'Why did I agree to this? Sweat game was real this morning with @christianmiranda,' she wrote in the caption.  

While most of the Bondi-based beauty's fans congratulated Natalie on her workout, one follower slyly commented: 'Serious trolling to @Danadiar LOL.'

Not featured: Natalie and Dan (left) have been noticeably absent from each other's Instagram accounts in recent months

Where's Dan? He hasn't been seen on the models account in 36 weeks while Natalie has been absent from his account for 28 weeks

Indeed, she and Dan have not been pictured together for several months. 

Dan hasn't been seen on the models account in 36 weeks while Natalie has been absent from his account for 28 weeks.

The couple became engaged during a July 2015 holiday and had previously made plans to wed on October 22. 

Changing plans: The couple became engaged during a July 2015 holiday and had previously made plans to wed on October 22, before the nuptials were unexpectedly called off

'There is no third person and there is nothing wrong with their relationship': A representative for the couple issuing a detailed response to Daily Mail Australia explaining why it was not going ahead, denying any romance breakdown

But the nuptials were unexpectedly called off, with a representative for the couple issuing a detailed response to Daily Mail Australia explaining why it was not going ahead, denying any romance breakdown.

'Their wedding's been moved not due to a third person in the relationship problem,' the spokesperson said. 

'It was moved because the reception [venue] ended up closing down and they haven't yet found a replacement place to have the reception at.

'That's the only reason why it's been moved. There is no third person and there is nothing wrong with their relationship.' 

A source recently told The Daily Telegraph that they had parted ways before Christmas last year. 

Rumoured split: A source recently told The Daily Telegraph that they had parted ways before Christmas last year 

The comments below have not been moderated.

The views expressed in the contents above are those of our users and do not necessarily reflect the views of MailOnline.

We are no longer accepting comments on this article.

Who is this week's top commenter? Find out now