With the Oscar red carpet serving as the world＇s top fashion runway, designers aren＇t leaving who wears what to chance. It＇s a given nowadays that stars get to keep the outfits they wear--some worth thousands of dollars. But the new buzz is that some companies, especially those late to the celebrity dressing game, will offer cash to ensure that stars wear their label. And others are linking Oscar clothes to luxury travel or complete wardrobes.