Dressing up for Onam, the harvest festival of Kerala, is all about understanding traditions and how they can shape your couture. If you're still confused, here's a useful guide to dressing up for Onam, inspired by Bollywood divas like Rekha, Alia Bhatt, Sonam Kapoor Ahuja and more.Women usually prefer wearing Kerala Kasavu saree or Settu saree for the celebrations. It is a white or off-white saree with golden zari border. Take Malavika Mohanan's latest Onam-inspired look for example. She wore a simple cream and gold Kasavu saree with a blouse comprising a sweetheart neckline.