'Aloha!' Rihanna slips into a tiny bikini as she poses for tropical selfies while on holiday in Hawaii

PUBLISHED: 06:04, 18 April 2015 | UPDATED: 13:50, 18 April 2015

She's never one to shy away from posting a revealing selfie.

And on Friday Rihanna took to Instagram to share a snap of herself reclining in a beach chair while sunning herself in a tiny two-piece.

The 27-year-old appears to be in Hawaii as she also populated her social media page with another self-portrait with the caption 'aloha muthaph**ka'.

Tropical holiday: Rihanna appears to be in Hawaii for a relaxing break

Meanwhile, she is moving forward from the drama caused by the emergence of a video which appeared to show her preparing a suspicious substance and holding her nose at the Coachella music festival.

And Rihanna felt it was time to treat herself to some new bling as she showed off her unique new ‘grill’ on Instagram.

Posting up a selection of images earlier that same day, the singer was happy to give fans a look at the tiny gold grill which also featured a lip ring loop.

'Aloha': The 27-year-old took a series of selfies during her day in the sun on Friday

She's so hard: Posting up a selection of images, the singer was happy to give fans a look at the tiny gold grill which also featured a lip ring loop

The singer handily pointed out, ‘My grill got a piercing', before fans started to believe she might have a real lip piercing.

Meanwhile, the video of Rihanna, which was posted on Instagram and quickly deleted, shows her sitting at a table with what looks like a slim white tube in her hands as her pals dance around her.

After the camera cuts to her friends, it then pans back to Rihanna holding her nose for several seconds.

Check it out: The singer is a big fan of the jewellery which is worn over teeth and comes in various styles and sizes

While the video was quickly removed from Instagram, Rihanna later shared a similar video on her own page,which shows a brief clip of her holding the tube in her hands.

Speculation has been rife as to what exactly is going on in the video.

The Instagram account fly.xhuksta shared the video and wrote: 'CHECK OUT THE COKE HEAD I AINT SUPRISED DOE ALOT OF YALL GIRL BE COKE HEADS ON THE LOWSKI.'

However, according to complex.com, Rihanna quickly hit back to insist it was just a joint, by posting a comment on the users account.

Rihanna is believed to have written: 'N***a your lame ass got some f**king nerve!!! Any fool could see that's a joint that I'm basing with cigarette! Who tF snorts tobacco??!! FOH witcho "never been to a rodeo so someone squeezing their nose means they're doing coke" lookin ass!! (sic)'

Twitter quickly lit up with speculation as to what exactly was going on in the videos.

Rihanna continues partying with her gal pals at Coachella