Fit like a Glove

Etymology:

• It is an 18th century expression earlier referring to gloves merely. It was thought that any glove which was not lose that could easily fell off or which was not tight that it was hardly pulled on was considered fit. Today not only glove but other out fits or things that complement a particular thing can be called to “fit like a glove”. Similarly you can say a right person or girl for a man as “she fits him like a glove”.