Simone Holtznagel sizzles as she strikes a pose in her ‘birthday suit’

She’s the former Australia’s Next Top Model star who’s graced the cover of Playboy.

And on Wednesday, Simone Holtznagel happily worked all her best angles as she posed in her ‘birthday suit’.

Sharing an image to Instagram, the blonde bombshell looked nothing short of sensational as she posed in a Siya Slice Gather Dress in black designed by label By Johnny. 

Simone allowed her famous long locks to cascade down her back in the photo, and kept her makeup palette ultra-glam with a smokey eye and lashings of mascara. 

The stunner’s eye-popping display comes after she enjoyed a night out with boyfriend Jono Castano for her birthday.

The leggy head turner, who is believed to be 29, was seen canoodling with Jono and smooching in a clip he shared to Instagram. 

‘There is no better way to say happy birthday than to say you mean so much to me Simone Holtznagel,’ Jono wrote. 

The stunner’s eye-popping display comes after she enjoyed a night out with boyfriend Jono Castano for her birthday 

‘There is no better way to say happy birthday than to say you mean so much to me Simone Holtznagel,’ Jono wrote on the social media platform 

‘I am thankful for every moment we spend together, and I wish our happiness never ends,’ he added. ‘I love you,’ Simone replied in the comments.

Simone and Jono have been surprisingly tight-lipped about their romance aside from a handful of social media posts.

They confirmed their romance in May, when they were seeing locking lips at a Mimi’s in Coogee. 

Simone and Jono have been surprisingly tight-lipped about their romance aside from a handful of social media posts 

Mimi’s is a celebrity hotspot owned by Justin Hemmes, who is dating Simone’s sister Madeline.

Their relationship comes after Jono’s split with wife Amy.

The pair remain on good terms and still co-own Acero gym in Sydney.

Their relationship comes after Jono’s split with wife Amy. Pictured: Simone and Jono