Cheeky! Justin Bieber's protege Madison Beer gets a smooch on her backside from boyfriend Jack Gilinksy

By Stephanie Haney At Dailymail.com

Published: 15:49 EST, 30 December 2016 | Updated: 13:03 EST, 31 December 2016

They've been packing on the PDA during a sun-soaked getaway for the past several days.

But Madison Beer and and her boyfriend Jack Gilinsky took things to the next level during a cheeky flirt-fest at the Fontainebleu Hotel in Miami Beach on Friday.

The 17-year-old singer donned a skimpy white bikini as her beau of nearly two years knelt down in the sand and smooched her backside.

Naughty! Madison Beer and and her boyfriend Jack Gilinsky took things to the next level during a cheeky flirt-fest at the Fontainebleu Hotel in Miami Beach on Friday

Jack, 20, who rose to internet fame on Twitter's Vine application, was clearly not shy as he planted a kiss on the teen's derriere in front of several other hotel guests.

One woman even took stopped to take a photo of the inappropriate behaviour as Justin Bieber's protégé played along with her hunky beau.

The young starlet eventually pushed Jack's head away as she had had enough of his naughty conduct. 

Cheeky! The 17-year-old singer donned a skimpy white bikini as her beau of nearly two years knelt down in the sand and smooched her backside

Inappropriate: Jack, 20, was clearly not shy as he planted a kiss on the teen's derriere in front of several other hotel guests

Misbehaved: One woman even took stopped to take a photo of the inappropriate behaviour and Madison eventually pushed Jack's head away as she had had enough

But earlier in the afternoon it was a much different setting for the loved up pair as the enjoyed a quick snack on the lawn of the upscale resort. 

The couple retreated from the beach to the comfort of their hotel as they sat down for lunch, each with their tray to nosh on.

Beer wore an all-white, two-piece swimsuit with a vintage vibe, featuring a mid-level waist and thick band. 

The up-and-coming musical sensation wore her long, dark hair in french-braided pigtails for the day in the sun.

White hot! Beer wore a skimpy bikini with a vintage vibe, featuring a mid-level waist and thick band

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Loved up: The couple of nearly two years couldn't keep their hands off each other

Look of love: The twosome gazed upon one another as they enjoyed some alone time along the beach

Bottoms up! The pretty teen gave a glimpse of her posterior in the tiny bikini bottoms

Fun in the sun! Jack swept Madison off her feet and carried her into the ocean

The singer is currently working on her debut album, she told Sweety High in August, which has been in production since her discovery four years ago.

'It's a work in progress,' she said to the girls' gaming site. 'Hopefully, you can expect it sooner than later!'

Bieber personally signed Beer to Island Records, where he is also signed, after tweeting a link to her YouTube video covering Etta James' At Last in 2012. 

Impromptu picnic: Madison Beer, 17, stopped for a quick snack on the lawn with boyfriend, Jack Gilinsky, 20, at the Fontainebleu Hotel in Miami, Florida on Friday

Vintage vibes: Beer wore an all-white, two-piece swimsuit with a retro cut, featuring a mid-level waist and thick band

Bright white: The  singer's top was a blend of a classic triangle top without the tie strings, opting instead for what appeared to be a back hook closure

The teen performer also shares the same manager as the Canadian success story, Scooter Braun. 

Gilinsky, her beau, is also in the music industry. Originally from Omaha, Nebraska, he and his partner Jack Johnson make up the pop-rap duo Jack & Jack. 

The two got their start on Vine and have amassed 6.2million followers on the social media site to date, capitalizing by posting snippets of their music and sending followers to their YouTube channel for more. 

Braids for days: The up-and-coming musical sensation wore her long, dark hair in french-braided pigtails for the day in the sun

Musical company: Gilinsky, her beau, is also in the music industry; Originally from Omaha, Nebraska, he and his partner Jack Johnson make up the pop-rap duo Jack & Jack

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