Mirror Wider Than Pedestal Sink . Vanities vary from wide dual sinks to dainty pedestal styles, and so should the accompanying mirrors. An interesting mirror doubles as a focal point and a useful spot to check your hair or makeup. CeraStyle 033300UPED Bathroom Sink, Noura Nameek's from www.nameeks.com An interesting mirror doubles as a focal point and a useful spot to check your hair or makeup. Round mirrors generally leave more negative space at the “corners” than a rectangular mirror would, which makes sense because pedestal sinks leave some negative space around the pedestal base. It is ideal if the width of the mirror is less than the sink, including the vanity, for the sake of aesthetics.