On the highly anticipated fourth season premiere of Bravo's The Real Housewives of Orange County, Tamra Barney, Vicki Gunvalson, Jeana Keough, and Lauri Peterson welcome a new housewife to the block, 30-year-old blond bombshell Gretchen Rossi, who poses an immediate threat with her youth and golden good looks. This season the ladies are tackling greater challenges while coming to terms with past secrets and lingering issues. The ladies continue to strive to live the good life, but in reality the seemingly perfect lives of contemporary women juggling family, friends, and careers isn't always what it seems.