Madeline Holtznagel stole the show in a revealing nude mini dress at her 27th birthday party on Saturday.
The model was ecstatic when her billionaire boyfriend Justin Hemmes had thrown her a surprise bash at his luxury $100million home Vaucluse, Sydney.
She began the joyful day arriving via boat to the waterfront property, where she discovered all her friends waiting to surprise her.
Sharing a video to Instagram of the moment they jumped out to wish her a happy birthday, Madeline wrote: ‘The best surprise ever.
‘Thank you to my amazing boyfriend and friends who made my birthday so special.’
![Madeline Holtznagel, Justin Hemmes’ Girlfriend, Takes a Risk With Revealing Nude Mini Dress at Her 27th Birthday Party - Provides a Sneak Peek Into the Celebrations 1 Madeline Holtznagel stole the show in an incredibly revealing nude mini dress at her 27th birthday party on Saturday](https://i.dailymail.co.uk/1s/2023/10/23/05/76878723-12660565-Madeline_Holtznagel_turned_heads_on_Saturday_when_she_stepped_ou-a-2_1698035123090.jpg)
Madeline Holtznagel stole the show in an incredibly revealing nude mini dress at her 27th birthday party on Saturday
Madeline was surprised as she arrived at Hemmes’ home in her gym gear.
She threw her arms around Justin, 50, and thanked him, before getting glammed up in a dress more fitting for the birthday girl.
![Madeline Holtznagel, Justin Hemmes’ Girlfriend, Takes a Risk With Revealing Nude Mini Dress at Her 27th Birthday Party - Provides a Sneak Peek Into the Celebrations 3 The model was ecstatic when she found out her billionaire boyfriend Justin Hemmes had thrown her a surprise bash at his luxury $100million home Vaucluse](https://i.dailymail.co.uk/1s/2023/10/23/05/76878707-12660565-The_model_was_ecstatic_to_find_her_billionaire_boyfriend_Justin_-a-3_1698035123103.jpg)
The model was ecstatic when she found out her billionaire boyfriend Justin Hemmes had thrown her a surprise bash at his luxury $100million home Vaucluse
![Madeline Holtznagel, Justin Hemmes’ Girlfriend, Takes a Risk With Revealing Nude Mini Dress at Her 27th Birthday Party - Provides a Sneak Peek Into the Celebrations 5 Madeline was surprised as she arrived at Hemmes' home in her gym gear](https://i.dailymail.co.uk/1s/2023/10/23/05/76878701-12660565-She_began_the_joyful_day_arriving_by_boat_to_the_waterfront_prop-a-5_1698035123381.jpg)
Madeline was surprised as she arrived at Hemmes’ home in her gym gear
![Madeline Holtznagel, Justin Hemmes’ Girlfriend, Takes a Risk With Revealing Nude Mini Dress at Her 27th Birthday Party - Provides a Sneak Peek Into the Celebrations 7 Sharing a video to Instagram of the moment her friends surprised her and jumped out to wish her a happy birthday, Madeline wrote: 'The best surprise ever'](https://i.dailymail.co.uk/1s/2023/10/23/05/76878709-12660565-image-a-155_1698034630912.jpg)
Sharing a video to Instagram of the moment her friends surprised her and jumped out to wish her a happy birthday, Madeline wrote: ‘The best surprise ever’
Moments later, Madeline put on a leggy display as she stepped out of the house barefoot in a stunning nude dress which left little to the imagination.
The dress featured a flowy skirt which barely brushed the tops of her thighs and a bustier-style top.
Madeline shared even more pictures of her exclusive birthday party.
![Madeline Holtznagel, Justin Hemmes’ Girlfriend, Takes a Risk With Revealing Nude Mini Dress at Her 27th Birthday Party - Provides a Sneak Peek Into the Celebrations 9 Madeline was putting on a leggy display in a stunning nude dress which left little to the imagination](https://i.dailymail.co.uk/1s/2023/10/23/05/76878759-12660565-Moments_later_Madeline_was_putting_on_a_leggy_display_as_she_ste-a-4_1698035123375.jpg)
Madeline was putting on a leggy display in a stunning nude dress which left little to the imagination
![Madeline Holtznagel, Justin Hemmes’ Girlfriend, Takes a Risk With Revealing Nude Mini Dress at Her 27th Birthday Party - Provides a Sneak Peek Into the Celebrations 11 The dress featured a flowy skirt which barely brushed the tops of her thighs and a bustier-style top](https://i.dailymail.co.uk/1s/2023/10/23/05/76878747-12660565-With_a_flowy_skirt_which_barely_brushed_the_tops_of_her_thighs_t-a-7_1698035123428.jpg)
The dress featured a flowy skirt which barely brushed the tops of her thighs and a bustier-style top
![Madeline Holtznagel, Justin Hemmes’ Girlfriend, Takes a Risk With Revealing Nude Mini Dress at Her 27th Birthday Party - Provides a Sneak Peek Into the Celebrations 15 Madeline shared even more pictures of her exclusive birthday party](https://i.dailymail.co.uk/1s/2023/10/23/05/76878753-12660565-Madeline_shared_even_more_pictures_of_her_exclusive_birthday_par-a-6_1698035123391.jpg)
Madeline shared even more pictures of her exclusive birthday party
They included ice buckets filled with well over $1,000 worth of caviar along with a couple bottles of chilled Belvedere vodka.
A delicious seafood pasta dish was also provided for guests, as well as other multi-course meals served by private chefs.
As guests sat down at the luncheon, pub baron Justin also took the opportunity to say a toast to his beautiful girlfriend of three years.
Also in attendance was Madeline’s friend and ‘nude artist’ Dina Broadhurst who attempted to steal the show in her own incredibly raunchy dress.
![Madeline Holtznagel, Justin Hemmes’ Girlfriend, Takes a Risk With Revealing Nude Mini Dress at Her 27th Birthday Party - Provides a Sneak Peek Into the Celebrations 17 They included ice buckets filled with well over $1,000 worth of caviar along with a couple bottles of chilled Belvedere vodka](https://i.dailymail.co.uk/1s/2023/10/23/05/76878729-12660565-It_included_ice_buckets_filled_with_well_over_1_000_worth_of_cav-a-11_1698035123669.jpg)
They included ice buckets filled with well over $1,000 worth of caviar along with a couple bottles of chilled Belvedere vodka
![Madeline Holtznagel, Justin Hemmes’ Girlfriend, Takes a Risk With Revealing Nude Mini Dress at Her 27th Birthday Party - Provides a Sneak Peek Into the Celebrations 19 A delicious seafood pasta dish was also provided for guests, as well as other multi-course meals served by private chefs](https://i.dailymail.co.uk/1s/2023/10/23/05/76878719-12660565-A_delicious_seafood_pasta_dish_was_also_provided_for_guests_as_w-a-8_1698035123664.jpg)
A delicious seafood pasta dish was also provided for guests, as well as other multi-course meals served by private chefs
![Madeline Holtznagel, Justin Hemmes’ Girlfriend, Takes a Risk With Revealing Nude Mini Dress at Her 27th Birthday Party - Provides a Sneak Peek Into the Celebrations 21 As guests sat down at the luncheon, pub baron Justin also took the opportunity to say a toast to his beautiful girlfriend of three years](https://i.dailymail.co.uk/1s/2023/10/23/05/76878721-12660565-As_guests_sat_down_at_the_luncheon_pub_baron_Justin_also_took_th-a-9_1698035123665.jpg)
As guests sat down at the luncheon, pub baron Justin also took the opportunity to say a toast to his beautiful girlfriend of three years
![Madeline Holtznagel, Justin Hemmes’ Girlfriend, Takes a Risk With Revealing Nude Mini Dress at Her 27th Birthday Party - Provides a Sneak Peek Into the Celebrations 23 Madeline is pictured here receiving a ring as a gift from one of her friends](https://i.dailymail.co.uk/1s/2023/10/23/05/76878763-12660565-image-a-162_1698034750816.jpg)
Madeline is pictured here receiving a ring as a gift from one of her friends
![Madeline Holtznagel, Justin Hemmes’ Girlfriend, Takes a Risk With Revealing Nude Mini Dress at Her 27th Birthday Party - Provides a Sneak Peek Into the Celebrations 25 She couldn't wipe the smile off her face as she was embraced by loved ones](https://i.dailymail.co.uk/1s/2023/10/23/05/76878739-12660565-She_couldn_t_wipe_the_smile_off_her_face_as_she_was_embraced_by_-a-10_1698035123665.jpg)
She couldn’t wipe the smile off her face as she was embraced by loved ones