•Friends co-star Jennifer Aniston says she's gone through the hardest year of her life since marrying Hollywood heartthrob Brad Pitt. "There's been a real intense overhaul- about family, work, everything," Aniston says in Vanity Fair's May issue. "Marriage brings up all the things I pushed to the back burner- the fears, the mistrust, the doubts, the insecurities." Aniston is trying to make lemonade out of that lemon with an internet club for girls called Jen XX, on the Web site www.voxxy.com. Aniston says she can relate to her online audience. "I feel, half the time, like I'm one of those teen-age girls. Feeling stupid, feeling good enough, feeling adequate, asking "What am I doing?"- it doesn't go away."