Married At First Sight's KC Osborne arrived on the sunny Gold Coast on Friday, ahead of a nightclub appearance.

And KC sure let her hair down that evening as she enjoyed a wild night out with fellow MAFS alum Jason Engler, Jessika Power and Cameron Dunne.

The 32-year-old was seen getting cosy with Jason, 35, during their appearance at the SinCity Nightclub.

Jason - who dressed in a white T-shirt with a denim button up and black jeans - hugged her from behind and she showed off a big smile while in his embrace.

Behind them was Cameron, who is Jessika's housemate, dressed for the night out in a white button up and jeans. 

KC flaunted her sensational figure in a fitted beige skivvy that drew attention to her ample assets.

The reality TV beauty teamed with black high-waisted patent trousers that accentuated her trim body and booty. 

She accessorised her simple yet sophisticated outfit with a AUD$1,680 YSL cross body purse and chic black heels.

The brunette beauty wore her luscious locks out, letting the cascade down her shoulders. 

She opted for a glamorous makeup look with a radiant foundation, lashings of mascara and a glossy pink pout. 

Inside the venue, KC, who is a professional dancer, showed off her sensational dance moves on top of a table.

She appeared to be in her element as she let loose to the energetic music playing. 

At one point KC and Jason were spotted sharing a moment together as she placed her hand on his cheek.

Elsewhere in the venue, Jessika - who turned heads in a figure-hugging teal coloured dress - didn't hold back and partied the night away.

The 28-year-old was seen showing off her dance moves and getting low on the dancefloor. 

At one point, she couldn't help but share a cheeky kiss on the lips with a female friend who sat on her lap at the event.

After their appearance at the club, the reality TV stars were seen exiting the venue with KC leading the way, covering her face from the flashing photography lights, while Jason checked his phone. 

The foursome - Jessika, KC, Jason and Cameron - were then seen walking hand-in-hand as they left the club.

KC was seen cheekily kissing Jessika's hand, while Jason appeared to kiss Cameron on the cheek.