'Lydia Schiavello is definitely coming back, that's why she's in such great shape right now - she wants to look her best for the show,' the source continued.
The source also claims Foxtel is doing everything within its power to ensure this season is its biggest yet.
'They've been interviewing plenty of potential new Housewives, and are even considering bringing back some old faces like Chyka Keebaugh or Pettifleur Berenger,' the source added.
Season four saw a plethora of cast changes, with Pettifleur, Chyka, and Susie McLean being replaced by Venus Behbahani-Clark and Sally Bloomfield.
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