Nick Kyrgios' influencer girlfriend Costeen Hatzi walks in her first-ever fashion show at the Hunting Hue launch

Nick Kyrgios' girlfriend Costeen Hatzi has achieved a major career milestone - walking her first ever fashion show in Sydney on Tuesday.

The influencer and tennis WAG, 24, looked sensational as she strutted down the makeshift runway held at Bondi Icebergs.

Wearing a strapless one piece swimsuit that featured a print of the Bronte Baths, Costeen posed up a storm.

She accessorised with a small printed scarf tied around her neck, white cowboy boots and a gold Cartier Love Bracelet worth $12,000.

The brunette had her hair styled in loose, beachy waves to fit the theme of the swimwear launch and opted for a soft makeup palette with a nude lip.

Her boyfriend Nick was not in attendance, but was in Melbourne meeting a young man named Harrison who is fighting a chronic disease.

Other stars who turned out for the event included Kyle Sandilands' ex Imogen Anthony.

In a rare appearance, the model looked elegant in a gold silk gown that featured a plunging neckline and showed off her small arm tattoos.

She carried a grey faux fur coat on her arm and accessorised with a dazzling silver fringed handbag.

Imogen's blonde highlighted hair was softly curled and cascaded down past her shoulders, while adding a pop of colour with her heavily-blushed makeup and pink lip.

Michael Clarke's girlfriend Arabella Sherborne put on a show-stopping display in black trousers and a black strappy one piece that flaunted her ample assets.

The glamorous real estate guru posed for photos alongside her friend Alexandra Smith, who wore a black halter neck mini dress.

Laser clinic entrepreneur and Richard White's ex Linda Rogan also made a surprise appearance, wearing a gorgeous blue and gold satin shirt with a matching pant set.

The blonde businesswoman, whose laser clinics are based in Double Bay, opted for large, lightly shaded sunglasses and a black Chanel handbag slung over one shoulder.

She completed her look with a pair of $1,500 Aquazzura crystal-embellished sling-back pumps.

Rogan made headlines this month after claiming White, whose estimated $9.7billion wealth dropped by about $2billion recently, offered to invest in her business in exchange for sex.

Elsewhere, internet personality Julia Cavanagh looked stunning in a black strapless mini dress that featured a bubble skirt.

Her blonde locks were styled in a gorgeous updo while her bangs were softly curled to frame her face.

TV presenter Barry Du Bois sweetly stepped out with his daughter Arabella after detailing his heartbreak over her school bullying nightmare.

Barry - who is living with rare blood cancer myeloma - looked every inch the doting dad as he sweetly wrapped his arm around Arabella while smiling for the camera.

Arabella beamed from ear-to-ear as she appeared thrilled to be spending the quality time with her father at the glitzy event, attended by a string of Aussie names.

For the day out, Barry cut a dapper figure in a white T-shirt and black trousers, which he styled with a smart blazer and grey trainers.

He framed his face with his signature round glasses and flashed a huge smile as he enjoyed some father-daughter bonding time.

Arabella wore a brown dress, a fluffy hoodie and sandals and carried a designer Louis Vuitton purse.

Other influencers and names included former magazine publisher and property investor Deke Miskin, who stepped out in casual black attire alongside his wife Eve.

Meanwhile, influencer Courtney Best rocked a white strapless bandeau top and matching tailored trousers.

Hunting Hue showcased their latest range of swimwear and silk scarves, The Icons of Sydney, on the runway at Bondi Icebergs on Tuesday.

The brand took centre stage at Miami Swim Week this year, displaying Sydney's iconic landmarks in their unique pieces.