Bridesmaid wearing suit, do they hold a bouquet or get boutonniere?

My sister is wearing a suit for my wedding and I am so excited! She is going to look so good. At first I thought a bouquet would be fine but as the date is getting closer, I'm not sure if that will look good. I've also considered her wearing a boutonniere AND hiding a bouquet but will that look strange? I'm asking for advice from people who have had their bridesmaid wear a suit before, what did you do? Or if anyone has been to a wedding where a bridesmaid was wearing a suit, what did they do? My sister goes by she/her, just prefers the more masculine look. I've asked her and she says it's whatever I want (which I appreciate) but I'm also not sure as it's hard to find references!