The Saturdays singer, who has admitted in the past she has a crush on the heartthrob, wore a little pink latex number with black tights to the premiere of the 27-year-old actor's Disney flick, 'High School Musical 3' in 2008 and has joked the skimpy number was so tacky that it was fit for the bin.
Speaking in the new issue of Notion magazine, she said: ''We basically turned up in binbags to the 'High School Musical 3' premiere. We should have been literally put in a bin for wearing those. It was my one moment to meet Zac Efron and I was wearing a binbag. Not good.''
Despite having a soft-spot for Zac, Mollie is very much in love with her boyfriend David Gandy and couldn't help but gush over his impressive culinary skills.
She explained: ''I've cooked for David once: I made him eggs Benedict. But I didn't make the sauce. Because I'm saucy enough! Anyway, David cooks for me pretty much every night. He makes a very good Sunday roast.''
Mollie, 28, and David, 35, first started dating in 2011 before calling time on their romance just months later.
However, after a three-year break, the couple rekindled their relationship and have been going strong ever since.
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