Parents, bridesmaids and groomsmen of the bride and groom usually wear the ones on the left according to the direction of male left and female right.
The choice of flowers or silk flower can be decided according to your personal preference, financial ability and wedding site layout. Flowers are usually roses.
The color is usually beaming red.
In fact, modern people don't have as many rules about marriage as before. Although many weddings wear wedding dresses, most ceremonies are a combination of Chinese and western. (If you are a pure western-style or a pilot, you can consult a wedding company or host. After all, they have seen and done a lot. ) The regulations vary from place to place, so I don't think it's necessary to be too rigid. I've been a bridesmaid myself three times, so I'm a professional bridesmaid. Most bridesmaids and groomsmen are not lovers. I used white roses for my own wedding corsage. The host said it was to match the color of my wedding scene, and the man left and the woman right wore it.
In short, I think marriage is mainly about two people, and happiness is always important.