When she was still single she used to look normal almost chavvy, remember the bedrooms she used to film in, she had cheap furniture and looked messy all the time, her "makeup and perfume collection" didn't have expensive brands at all, I really doubt she really grew up in wealth I think her parents managed to make they "fortune" in the past years and just invested on expensive education so she and Hannah would catch a rich husband. She really upgraded her lifestyle and even her look once the diamond got in her finger.