Charles Darwin developed a theory of evolution. This society columnist, meanwhile, works to develop theories of social, fashion, and fund-raising evolution.

One trend spotted this week is mothers and daughters on the town together.

One of the perks of New York living not documented in “Sex and the City,” it’s a joy to observe and experience. (Thanks, Mom, for being my most reliable, fun “date,” always.)

At the superheroes-themed Metropolitan Museum of Art Costume Institute gala, mother-daughter teams outshined the others, and there was stiff competition from husband-and-wife celebrity couples, and fashion designers with models on their arms. The same was true at the New York Philharmonic’s “Camelot” gala.

So what does it mean? Well, it proves to me that women don’t need superheroes or princes to have a good time, nor do they need holidays like Mother’s Day to celebrate their mothers.

agordon@nysun.com