Former host Davina McCall, Chelsea footballer Ashley Cole and Playboy mogul Hugh Hefner also picked up considerable support in a poll conducted by MyVoucherCodes.co.uk.
Big Brother 7 housemate Thomas, who has been in the tabloids recently because of her relationship with Manchester United's Ryan Giggs, topped the survey with 61% of readers wanting her to return to the reality show.
Lord Sugar, The Only Way Is Essex star Lauren Goodger and Lady GaGa were also in the top ten most desired contestants.
Celebrity Big Brother will air on Channel 5 later this month.
Pamela Anderson, Crystal Harris, Jedward, Kerry Katona, Amy Childs and Big Fat Gypsy Weddings star Paddy Doherty have all been tipped to enter the famous Elstree compound.
Watch the Channel 5 Big Brother trailer below: