Diamonds, designer dresses and a private ballet performance: Inside the most expensive party of the year as Dina Broadhurst and Deborah Symonds attend Hamilton Island heiress’ 50th birthday

Australia’s elite socialite scene flocked to the Whitsundays this weekend to celebrate the 50th birthday of winemaking and yacht racing heiress Nicky Oatley.

The exclusive party took place at the lavish Qualia resort on Hamilton Island, which is owned by Nicky’s family, and saw a group of mega-rich socialites come together for a luxurious experience to remember.

Among the guests in attendance were athleisure entrepreneur Deborah Symonds O’Neil and her husband Ned, the son of millionaire superyacht broker and Rose Bay marina owner Denis O’Neil.

‘Nude artist’ and socialite Dina Broadhurst also attended the bash with her new multi-millionaire heir, boyfriend John Winning, while fashion blogger Nadia Fairfax was in tow with her financier husband Michael Wayne.

Joining them on the lavish trip were Harper Bazaar fashion editor Caroline Tran and the birthday girl’s sister Lyndal Oatley, an Australian Olympic dressage rider, and Lyndal’s Swedish husband, husband Patrik Kittel, who rides horses.

Australia’s elite socialite scene flocked to the Whitsundays this weekend to celebrate the 50th birthday of winemaking and yacht racing heiress Nicky Oatley. (Photo: Nicky Oatley and husband Jonathan Pearce)

Nicky’s husband, banker Jonathan Pearce, was also in tow for the festivities.

Instagram photos from the birthday outing show guests toasting Nicky with champagne while dining on the beach.

The guests dressed to impress, with the women wearing designer dresses and diamond jewelry, while the men wore sleek tuxedos and bow ties.

The exclusive party took place at the lavish Qualia resort on Hamilton Island, which is owned by Nicky's family, and saw a group of mega-rich socialites come together for a luxurious experience to remember.

The exclusive party took place at the lavish Qualia resort on Hamilton Island, which is owned by Nicky’s family, and saw a group of mega-rich socialites come together for a luxurious experience to remember.

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Among the guests in attendance was athleisure entrepreneur Deborah Symonds O’Neil (photo)

Deborah was accompanied by her husband Ned (left), son of millionaire superyacht broker and Rose Bay marina owner Denis O'Neil

Deborah was accompanied by her husband Ned (left), son of millionaire superyacht broker and Rose Bay marina owner Denis O’Neil

'Nude artist' and socialite Dina Broadhurst (left) also attended the party with her new multi-millionaire heir, boyfriend John Winning (right)

‘Nude artist’ and socialite Dina Broadhurst (left) also attended the party with her new multi-millionaire heir, boyfriend John Winning (right)

Fashion blogger Nadia Fairfax (right) was in tow with her husband, financier Michael Wayne (left)

Fashion blogger Nadia Fairfax (right) was in tow with her husband, financier Michael Wayne (left)

Fashion guru Nadia Fairfax made sure to document her wardrobe via Instagram, sharing photos of herself swimming on the beach in a $7,000 dress from designer Van Der Kooij.

She paired her ensemble with Chopard jewelry, including a diamond-encrusted watch.

Guests also enjoyed a private ballet performance by members of The Australian Ballet, who danced against the backdrop of the Coral Sea at sunset.

Instagram photos from the birthday outing show guests toasting Nicky with champagne during a dinner on the beach

Instagram photos from the birthday outing show guests toasting Nicky with champagne during a dinner on the beach

The guests were dressed to impress, with the women wearing designer dresses and diamond jewelry, while the men wore sleek tuxedos and bow ties

The guests were dressed to impress, with the women wearing designer dresses and diamond jewelry, while the men wore sleek tuxedos and bow ties

Fashion guru Nadia Fairfax shared photos of the Chopard diamond jewelry she wore during the getaway

Among her expensive accessories was a diamond-encrusted Chopard watch

Fashion guru Nadia Fairfax shared photos of the Chopard diamond jewelry she wore during the getaway

The Australian Ballet hosts an exclusive performance at Qualia every two years, with package tickets for two guests starting from around $4,840.

Guests stayed overnight at the five-star Qualia resort, where rooms can cost up to $7,200 per night.

Surrounded by the Great Barrier Reef, the luxury resort offers panoramic views of the Coral Sea and Whitsundays.

Guests enjoyed a private ballet performance by members of The Australian Ballet, who danced against the backdrop of the Coral Sea at sunset

Guests enjoyed a private ballet performance by members of The Australian Ballet, who danced against the backdrop of the Coral Sea at sunset

Guests stayed overnight at the five-star Qualia resort, where rooms can cost up to $7,200 per night.  (Photo: Dina poses in her hotel room)

Guests stayed overnight at the five-star Qualia resort, where rooms can cost up to $7,200 per night. (Photo: Dina poses in her hotel room)

Who is the Oatley family?

The Oatley family has interests in the wine industry and is famous for winning the Sydney to Hobart yacht race nine times.

Family patriarch Bob Oatley died in 2016 at the age of 87.

The pioneering businessman made his fortune in the wine industry by selling his successful Rosemount wine company to Southcorp for a reported $1.5 billion in 2001.

He founded Rosemount Estate in 1969 in NSW’s Hunter Valley and sold his first vintage in the early 1970s.

Over the next thirty years, Rosemount became the second best-selling Australian wine brand in the US and Australia’s largest family-owned wine company.