I'm looking for a sarong, but I've only seen one so far that fits my needs (plain white) and its like $50. I'm not sure I'm OK spending that much money on a rectangle of fabric.

Do you guys think I could just use a huge cotton scarf? I'm basically gonna use it as a cover-up. Or any recommendations for where to get one? It's for my LA trip, so specific LA suggestions would be great too.