How should a boutonniere be attached to clothing?

A boutonniere should be attached to clothing with a pin or magnet because these methods allow for easy attachment and removal without causing damage to the garment. The traditional approach using a pin involves inserting the pin through the stem of the flower and then into the lapel, securing it in place while ensuring that it remains secure throughout wear. A magnet can also be used for a less invasive option, where one side of the magnet is placed on the inside of the clothing and the other side holds the boutonniere in place from the outside.

Other methods such as using glue could potentially damage the fabric or not hold the boutonniere securely, while sewing it on would make it impossible to remove without altering the garment. Tying it could lead to an insecure hold and may not present the boutonniere attractively. Thus, pinning or using magnets provides an optimal blend of security and aesthetics.