Chelsea Clinton Wedding Dress ShoppingWhich designer Chelsea Clinton will choose to design her wedding dress has caused more debate than the ending of 'Inception.'

Now, Susannah Cahn at StyleList takes us deep within the ever expanding mystery:

It's already been a question among fashion insiders for months: Will bride-to-be Chelsea Clinton wear Vera Wang or Oscar de la Renta when she walks down the aisle to marry investment-banker fiance Marc Mezvinsky on July 31 in Rhinebeck, NY?

A friend told our friends at StyleList back in June that Clinton had a made-to-measure wedding dress in Vera Wang's workshop, confirming what we had speculated all along -- the presidential progeny was opting for the epitome of classic American bridal. That was until Sheryl Gay Stolberg, The New York Times' White House correspondent, told Ann Curry on 'The Today Show' that the former first daughter had chosen an Oscar de la Renta gown.

Did we speak too soon? The plot thickens. WWD's Wednesday cover features Chelsea, obscured by a large floppy hat, arriving at Vera Wang's midtown showroom in New York City on July 27 to meet her Secretary of State mom Hillary Rodham Clinton, who was already there.