Vera Wang -- My Marriage Has Gone Flaccid

Vera Wang -- wedding dress designer to the stars -- has separated from her husband ... this according to Wang's rep.

The President of Wang's company released a statement saying, "Vera Wang and Arthur Becker have mutually and amicably agreed to separate. They remain devoted parents to their two daughters.”

Wang and Becker married in 1989. So far, it's unclear if either party has filed divorce papers.

63-year-old Wang is estimated to be worth hundreds of millions of dollars -- which could lead to a very complicated divorce.

One item that might become a source of tension -- a $10 million glass-walled home Vera purchased in L.A. last year.