This video explains how to wear suspenders with a suit. As explained here, the pants of the suit need to have buttons fitted on the inside of the waistband to connect the suspenders to. This is the only proper way of connecting your suspenders with the pants and is in line with the suit etiquette. Belt loops should be removed when you bring your pants to a tailor to have him put the buttons in. Otherwise it looks a bit silly.. Enjoy the video on how to wear suspenders, and enjoy wearing your suspenders!