Condé Nast Brides can exclusively reveal that Thelma Madine, known for her extravagant wedding dress designs in the Channel 4 documentary My Big Fat Gypsy Wedding (currently showing on More4), will create Catherine Middleton's bridal gown for her wedding on April 29. Ms Madine's dramatic wedding dresses have included the use of embroidered L.E.D. butterflies, 10-stone skirts, skin-ripping corsetry and flame-sensitive fabrics in shades of highlighter pink and green. However, a anonymous source has disclosed that Miss Middleton's wedding gown will have a more subtle design. 'Kate is a big fan of the show. Her dress is going to be big, that's for sure, but it'll be pure bright white and the corset won't be sheer. She's going to be a Princess and no one understands that better than Thelma. I was in her atelier [the couture fashion term for "workshop"] and spotted a huge Kilner jar of really gorgeous crystal beads so I imagine they'll be sewed onto the corset. Thelma's pulling out all the stops but she's worried the skirt will be so heavy that Kate might need to hold up it with clear fishing wire attached to her silk gloves.' It is rumoured Miss Middleton will accessorise her gown with a tiara from the Royal Family, possibly chosen by Her Majesty The Queen, and Christian Louboutin high-heeled shoes painted with a blue sole to represent her "Something Blue". Mr Louboutin's shoes are traditionally made with a red sole and this new design is expected to fuel a high street copycat phenomenon. Palace officials refused to comment.