Tennis champion Nick Kyrgios and girlfriend Costeen Hatzi set off engagement speculation earlier this week. 

And the pair certainly did little to dampen rumours of an upcoming announcement while stepping out in Sydney on Thursday. 

Nick and Costeen looked every inch the loved-up couple as they fronted the media pack for the premiere of Break Point. 

Costeen looked glamorous as ever wearing a slinky black dress with cut-outs at the ribs to showcase her petite frame. 

The WAG opted to finish her outfit with a designer bag and strappy heels along with a number of bracelets for the occasion. 

Costeen wore her raven tresses down past her shoulders and opted for a glossy makeup style which flaunted her flawless complexion. 

Nick opted for a more casual look wearing a sports jacket, track pants and a pair of Nike sneakers which gave his look an edge. 

Former tennis star Alicia Molik kept her look glamorous wearing a black t-shirt, red blazer and a pair of loose-fitting white pants. 

She finished her look with silver espadrilles which gave the look a high-fashion edge.

Love Island star Anna McEvoy looked glamorous wearing a longline blue dress paired with a white handbag and slides. 

Meanwhile, boyfriend Michael Staples looked smart in a striped shirt matched with a pair of black pants. 

He finished his look wearing a pair of brown loafers. 

The Block's Shaynna Blaze opted to flaunt her trim pins in a striped blue and white dress which grazed her thighs. 

She finished her look with ballet-style flats and a designer bag.  

The TV star wore her blonde tresses down allowing them to stop at her shoulders. 

Abbie Chatfield's ex-boyfriend Konrad Bien-Stephen opted for a graphic shirt along with pleated dress pants. 

He finished his look with chunky black boots. 

Konrad posed alongside James Parr who opted for a double denim ensemble.