Appearing on Wednesday night's episode, the busty brunette was unrecognisable compared to her glamorous social media selfies.
The 26-year-old showed off a make-up free look while preparing for her wedding to tradie Ryan Gallagher.
Known for her vivacious good looks, the bikini model revealed on the show that being beautiful is the reason for her bad luck when it comes to finding 'the one.'
'I've dated a lot of different guys, but they see the bikinis, they see boobs, and they do just want one thing,' she revealed.
'When it comes to a third date or a second date, they don't want to go to dinner, it's not about that for them. They just wanna get into your pants.'
She continued: 'It's incredibly difficult for me to find anything genuine. I would just love a normal tradie, just a normal Aussie bloke that will look after me.'
Rankin was matched with tradie Gallagher on the hit show, but was left unimpressed after he commented on her cleavage at the alter. She later dodged two kisses from him, and made him sleep on the couch when they got back to their hotel.