Re: looking for an idiom One idiom that I can think of for two people marrying outside of their class status is "Marrying up" ... which tends to also have a negative connotation.[/quote]
The original question, though, was to find an idiom that puts the two at the same level. If you marry up, you marry someone a lot more successful than yourself. You step up the social status ladder.
ex. John Kerry marrying Teresa Heinz. Big $$$$ |