Madeline Holtznagel's Birthday Tribute to Justin Hemmes

Model Madeline Holtznagel has taken to social media to share a gushing birthday tribute to her boyfriend Justin Hemmes.

The 27-year-old shared a series of romantic snaps to Instagram on Tuesday to mark Justin’s 52nd birthday.

‘Happy birthday my love,’ she captioned the post, adding a rose emoji.

One sweet picture showed a beaming Madeline sitting in Justin’s lap as he lovingly looked at his girlfriend.

Madeline looked stunning in a cream coloured sleeveless corset top and matching mini-skirt for the photo.

Another romantic image showed the pair cuddling up to one another as they relaxed on a yacht.

Madeline was not afraid to show the couple’s playful side sharing a third photo that showed the pair hamming it up for the camera in tennis attire.

Another showed them in party mode, with Justin decked out in a quirky sleeveless animal print jacket and a pair of clear yellow sunglasses.

Model Madeline Holtznagel has taken to social media to share a gushing birthday tribute to boyfriend Justin Hemmes

Madeline, flaunting her slender frame in a lilac-coloured two-piece bikini, cuddled up to her beau as the pair enjoyed the festivities.

Her followers were quick to gush over the cute snaps, with many taking the time to also wish Justin many happy returns.

The post comes after rumours surfaced Madeline is currently feuding with the ex of her model sister Simone Holtznagel.

The rift between one-time eastern suburbs ‘It couple’ Jono Castano and Simone, 31, took an unexpected turn earlier this month.

One sweet picture showed a beaming Madeline sitting in Justin’s lap while he wrapped his arm around her

Madeline looked stunning in a cream coloured sleeveless corset top and matching mini-skirt

Jono, a celebrity personal trainer whose clients include Candice Warner and Rebel Wilson, told Daily Mail Australia at the time he split from Simone nine weeks earlier.

But after the announcement, the 33-year-old owner of Sydney’s trendy Acero gym has been hit with claims he’s feuding with Simone’s sister Madeline.

Daily Mail Australia understands Jono’s rift with Madeline stems from before he ended things with Simone and was sparked by a ‘disrespectful’ argument.

A source with knowledge of the feud says Jono and Madeline now ‘want nothing to do with one another’.

While Jono and Madeline still follow each other on Instagram, they do not generally like each other’s posts or interact on the social media platform.

Madeline was not afraid to show the couple’s playful side, either, sharing a photo that showed the pair hamming it up for the camera in tennis attire

Another showed them in party mode, with Justin decked out in a quirky sleeveless animal print jacket and a pair of clear yellow sunglasses

Despite the alleged estrangement, Simone remains on good terms with her sister Madeline and the siblings are frequently seen spending time together.

Madeline and Justin quietly began dating in 2019, a year after he made his debut on the Financial Review Rich List with an estimated net worth of $951million.

Justin Hemmes is considered Australia’s hospitality king with more than 80 venues and billions in assets with names like the Ivy, Queen Chow, hemmesphere and Establishment under his purview as CEO of Merivale.

Earlier this year, Madeleine celebrated her 27th birthday party with a lavish bash at Justin’s sprawling Vaucluse estate.

Following the festivities, Madeline revealed on Instagram that her doting partner had also bought her two llamas as a sign of his love.