THE disappearance of a young woman from a Fortitude Valley nightclub on Saturday night has left friends and family shocked.

Rebecca Mackenzie, 22, was out celebrating a friend’s 23rd birthday at The Met nightclub, before she “stormed out” at around 2am.

She should be preparing for her own 23rd birthday this week, instead she hasn’t been heard from for more than two days.

The fit, young bodybuilder had just landed her “dream job” as a production co-ordinator in Brisbane.

She was also a fitness model, and had only just met her new boyfriend, Jon West, who her friends described as being a “sweet and gentle boy.”

Ms Mackenzie’s disappearance is not being treated as suspicious and no foul play is believed to have occurred.

Detective acting Inspector Steve Hatton said the investigation had so far failed to identify any incidents that occurred around the Wickham St area.

media_camera Facebook image of Rebecca Mackenzie who was last seen in Fortitude Valley

It has concerned her close group of friends though, who said it was very out of character of her to go missing.

“If she ever lost her friends, she would come to the nightclub where I used to work to hang out,” Jennifer Joy said.

“She has friends behind the bar and on security.”

Det Insp Steve Hatton appealed for anyone who saw Ms Mackenzie between Wickham St and the Story Bridge between 1.40am and 2am Sunday to contact police.

“At this stage it appears she was socialising with friends, left the Met Nightclub and we believe walked towards the Story Bridge,” he said

Yesterday, friends and family took to the streets to find the missing woman.

Her mother, Beryl Martin, was shaken up with the news of her daughter’s disappearance.

“I haven’t had any sleep,” Mrs Martin said.

“I’m just not sure what to do.”

It is believed Ms Mackenzie had been involved in an argument with her boyfriend before leaving personal items at the club and disappearing.