Lord of the hipsters makes triumphant return to The Forbes 400 after 2-year absence; Urban Outfitters stock up 80% since last August. Clothing retailer bucking downward slide among other fashionistas; first-quarter net income up 25% over same period last year to $394 million. Internet and catalog transactions driving growth. Plans to open 45 new locations this year. Adding to existing brands—Urban Outfitters, Free People, Anthropologie—with high-end gardening store Terrain; targets middle-age, suburban women with disposable income. Attributes firm's success to hiring young employees.