_ Radhika Merchant, who is set to marry billionaire heir Anant Ambani, has Princess Diaries style slumber party complete with a lavish banquet

She's set to have a wedding bigger than most royal nuptials.

So it's perhaps no surprise that Radhika Merchant's hen party was inspired by the Princess Diaries.

The 29-year-old daughter of billionaire Shri Viren Merchant, who is the CEO of private health firm Encore Healthcare is set to marry Anant Ambani, 28, is the youngest son of Mukesh Ambani, India's richest man and the managing director of Reliance Industries, which has a revenue of $110bn.

The pair are believed to be tying the knot in the UK in July, with pre-wedding celebrations including an engagements party where Rihanna was reportedly paid $5million to perform.

Now, the couple appear to be celebrating Radhika's hen party, with Bollywood star Janhvi Kapoor sharing snaps of the do.

The snaps showed how guests were treated to a Princess Diaries style party, which included 'mattress surfing'.

Clad in matching pink pyjamas, guests took mattresses down a giant slide, in a nod to the 2004 film starring Anne Hathaway and Julie Andrews where Mia Thermopolis (played by Hathaway) holds a bachelorette slumber party attended by princesses from around the world.

The guests also enjoyed 'balloon painting' - another activity inspired by the film - where they threw pins at a canvas filled with balloons of paint in order to make an art piece.

Sharing pictures from the night, Janhvi wrote: 'A Princess Diaries Royal slumber party for the most special bride,'.

Other photos showed Radhika in bridal white pyjamas, with a crown, a flower wall, and towers of macaroons and other sweet treats.

The party appeared to also be attended by Anant and his friends, with photos showing the group dancing together.

This is the latest pre-wedding party for the couple.

In February, global tech CEOs, Bollywood stars, pop icons and politicians flew in for the three-day occasion hosted by billionaire tycoon Mukesh Ambani.

The festivities are believed to have cost a staggering £120million, sources told MailOnline. The catering contract alone, awarded to one of India’s leading five-star hotel groups is rumoured to be around £20million, with Rihanna taking £5million to perform.

Sources spoken to by MailOnline who are close to the Ambanis also claimed the figure will ‘significantly increase’ with millions more set to be spent in July, when the marriage of Ambani’s son Anant to Radhika Merchant.

. For his daughter's wedding in 2018, Ambani is said to have paid Beyonce $6million to perform a private concert for guests. 

Ambani held the most expensive wedding in India for his daughter in 2018, which reportedly cost $100million and saw US pop megastar Beyonce perform.

This time, Rihanna, illusionist David Blaine and Bollywood's Diljit Dosanjh will perform for the guests, who are expected to include Microsoft founder Bill Gates, Meta head Mark Zuckerberg, and several current and former political leaders, according to a list released by Reliance.

Also among the invitees is Disney chief Robert Iger, following a deal agreed Wednesday between Reliance Industries and Walt Disney to merge their Indian media businesses.

Other guests invited include Ivanka Trump, the former US president's daughter, as well as ex-Swedish prime minister Carl Bildt, former Canadian prime minister Stephen Harper and the King of Bhutan.

Bollywood stars Amitabh Bachchan and Shahrukh Khan, cricket icons Sachin Tendulkar and M.S. Dhoni, and industry titan Gautam Adani are also invited in a who's-who of India's super-rich elite.

A source said: ‘No expense has been spared for this three-day party. It is a jaw dropping amount of money but when the Ambanis do something they do it big.

'The whole of Jamnagar is celebrating because they are all being fed and pampered and treated like celebrities.’

Another source said: ‘This is not the first time that they are spending money like this on one of their children’s weddings.

'These are going to be a memorable three days with some of India’s and the world’s most famous people present. It’s going to be as lavish as you can get.'

The Ambanis are building a Hindu temple complex in Jamnagar, to keep 'India's rich cultural and spiritual identity at the heart of the wedding festivities', the Reliance Foundation said on social media.

Bride-to-be Anant Ambani, 29, is the daughter of billionaire Shri Viren Merchant, who is the CEO of private health firm Encore Healthcare. 

The invite for the pre-wedding celebrations - which have been widely circulating on social media - read: 'With hearts full of joy and excitement, we invite you to the pre-wedding celebrations of Anant and Radhika at our home in Jamnagar. 

(Fluierul)