United Kingdom, April 5 -- Sarah Jessica Parker thinks not being a "Hollywood couple" has helped her marriage.

The 'And Just Like That' actress married Matthew Broderick - with whom she has son James, 22, and 15-year-old twins Marion and Tabitha - 29 years ago and she believes not speaking much about her personal life and being under the radar in New York has been key to their long-lasting romance.

Asked the secret to her happy marriage, she told Britain's HELLO! magazine: "Probably that I don't talk about it! It really is a secret.

"But maybe it's because we're not a Hollywood couple. We live in New York - maybe that's good."

The 60-year-old actress has always felt "insecure" about her appearance but doesn't care anymore about what p...