Yes. You should have seen Hisano in that honking fireball necklace. Good Lordy! Great balls of fire!!!!! She totally carried it off!
Only problem was, they out-honked the beautiful handmade earrings she designed, which were delicate and subtle. That fireball was the most outstanding necklace seen at the entire show!!!
Your sister is beautiful, and because she generally wears smaller scale jewelry it likely would be a bit shocking to see her in large earrings. It's a matter also of personal style and what one is comfortable in.