While it's unlikely the charity store dresses will be used for the actual wedding ceremonies next season, as each season we've seen brides shopping for their own bridal frocks, the dresses could be used in promo material.
Brides and grooms are often photographed ahead of the series to promote the show.
On season six of MAFS, fans were treated to a raw insight into the relationships of the contestants who hadn't met each other before their 'wedding day'.
Only one couple 'made it', with Cameron Merchant and Jules Robinson finding love with each other on the show.
The loved-up couple got engaged at the show's final vow renewal ceremony, and have set the wedding date for later this year.