The RV life isn't just for travellers, it turns out celebrities love to splash out when it comes to tour buses and trailers. Whether it's a luxury space to recuperate on the set of a blockbuster movie, or an A-class home for a road trip into the wilderness, let's take a look inside the most luxury celebrity motorhomes out there... 

Justin Bieber and wife Hailey, decided to get away from it all last month in an ultra-luxurious motorhome. The couple headed off to Utah for a glamping break and spared no expense with their accommodation, splashing out on an opulent Marathon Coach RV. 

This model, which is similar to the couple's design, is one of the world's most expensive RVs coming in at $2.46 million and is complete with everything they'd need to spend their time on the road in ultimate comfort. This model features an under-floor heating system, voice controls and a pop-up GPS system just to name a few. Outside, the plush accommodation has an automatic awning, which the couple were seen using during their trip around Utah.

Actor Jamie Foxx purchased this huge motorhome for hosting his online talk show Off Script. The souped-up RV is where Foxx sits down with his star guests to discuss the movies they love and their cinematic influences. Stars have included the likes of Vince Vaughn and Denzel Washington. 

Inside, the motorhome by Anderson Mobile Estates is set up like a state-of-the-art studio, with a few extra luxurious additions. The decor has been kept fairly minimal with wooden floors throughout, concrete-effect walls, gold fixtures and even a record player. 

The Grey Goose bar is ideal for entertaining fellow A-listers. Fully stocked, the stunning gold and blue back-lit design is a stand-out feature of the motorhome. Flanked by a long picture window, it's the perfect space for guests to admire the jaw-dropping view over a cocktail or two. 

This luxurious blue velvet sofa is where Jamie hosts his guests and films his hit online chat show. Spotlights line the ceiling of the motorhome, while a piano sits in the corner – perfect for an all-star sing-a-long after a long day of filming.

During the filming of his movie Inception in 2009, Leonardo DiCaprio spent his time between takes in this state-of-the-art trailer. With an opulent gold-effect exterior, the 53-foot design really is a mobile mansion. The RV features extendable sides that almost double the width from eight-and-a-half feet to almost 16 feet. 

With a total interior floor plan of 720 square feet, the design of the motorhome was based on a luxury cruise ship. Designer David Rovsek was inspired by the yachts of the rich and famous, picking out features such as the cherrywood, dropped ceiling and oval overhead mirror, all home essentials for the mega-rich. 

Pop legend Mariah Carey spends her time on tour in this huge motorhome that's been nicknamed the 'skyscraper on wheels'. When it's parked up, the 18-wheel RV can extend out to provide nearly 1,200 square feet of living space for Mariah and her entourage. The tinted windows provide her with the ultimate in privacy, while the sleek metal exterior is nothing short of opulent.

Ingeniously, the ceiling of the motorhome can be raised to create some extra headspace on the upper floor. This second-storey club space is the ultimate party house, featuring TVs at both ends, neon lighting and a dance floor – the perfect space for the star to raise the roof after a show.

As retirement presents go, a top-of-the-range motorhome is up there. When professional basketball player Shaquille O'Neal retired from the Boston Celtics, they presented him with this RV. The sportsman has always been a fan of motorhomes – in 2002, he purchased a 37-foot Fleetwood Discovery, but later swapped it out for this bigger set of wheels.

The Shaq-mobile is just a small part of the star's huge property collection and features a rustic interior with a large open-plan living and dining space. The kitchen has a full-sized sink, stone countertops and a microwave, while the dining area offers luxurious leather benches with a mounted television so that Shaquille never has to miss a basketball game when he's on the road. 

Country-inspired touches abound, from the mid-tone wood panelling to the bearskin rug and cowhide cushions. When the motorhome isn't on the road, the driving cabin has a mezzanine level above it where the ex-basketball player can kick back and relax.

If all that wasn't enough, the dressing area also features clever covert space in the form of a mobile 24-hour doctor's office. At the press of a button, a TV pops up with video access to a medical professional, plus there's a storage cabinet with over £121,000 ($150k) of medical equipment including a stethoscope and heart monitor. 

There's also a private area at the rear for the producer to kick back and relax. The door leading to the master suite can be opaque or transparent at the touch of a remote, all for the staggering cost of around £20,200 ($25k). This zone also has a private bathroom with granite countertops and lavish cherrywood finishes. 

The mind behind hits such as 'Apologize', acclaimed music producer Timbaland purchased this plush upscale RV so that he could make music on the road. With a dramatic custom exterior in red, black and grey, the sleek six-wheeler is hard to miss. 

At the other end of the motorhome is Timbaland's state-of-the-art recording studio. The specially-designed space has everything he'd ever need, including soundproof doors, a two-tier keyboard and a vocal booth with a gold-plated microphone. If the star ever gets tired of work, there's also a DVD player, Xbox and PlayStation to keep him entertained. 

When filming his blockbuster movies, including the iconic Fast & Furious franchise, actor Vin Diesel likes to sit back and relax in his £890,000 ($1.1m) trailer. The huge 1,100-square-foot vehicle was custom-designed for the actor and features multiple expanding walls, two storeys and vast picture windows.

The top floor of the extravagant trailer pops up when it's stationary to reveal a media lounge, private office space and a play area for the star's children. Vin Diesel must really love his mobile mansion, as he had it shipped all the way to Puerto Rico when he was filming the latest instalment of Fast & Furious.

High-tech surveillance cameras guard over the pricey trailer – just a small part of the pricey technology packed into the RV, which amounts to a staggering £56,400 ($70k), making it the perfect billionaire bolthole. Controlled by a central smart home system, Vin Diesel has all the entertainment he needs during down-time, with a number of 3D flat-screen TVs and Blu-Ray players.

Part of his impressive property portfolio, Will Smith's custom RV, known as 'The Heat', is where he spent time while filming Men in Black III and The Pursuit of Happyness. The 1,200-square-foot mobile home rests on 22 wheels and features 14 TV screens, £24,200 ($30k) worth of leather and around £80,600 ($100k) worth of technology.

The round dining table is perfect for socialising, with a wide picture window framing views of the set of Will's latest movie. There's also a light-up vanity mirror with a TV screen fitted behind it and a sliding doors leading to a wardrobe area where the star gets ready for filming. One thing's for sure, these opulent motorhomes aren't like any trailers we've seen before...

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