My big fab gay wedding

When you realize you’re finally getting married after eight years of waiting, you kind of want to share the news with everybody — even Prince William.

New Yorkers Bill White and Bryan Eure mentioned their upcoming nuptials to his royal highness at a veterans event in Los Angeles this month. After William offered an, “Oh, that’s terrific. Congratulations!” the couple asked if he might share any wedding tips. “He said, ‘If you just make sure one person is the final decision-maker, and you’re OK with that, you’ll be all right,’ ” says White.

Princely advice aside, Eure describes the wedding-planning process as “a team effort — I dream it up, and Billy makes it happen!”

PHOTOS: MY BIG FAB GAY WEDDING

White, the former president of the Intrepid Sea, Air and Space Museum who now heads the Constellations Group strategic consulting firm, and Eure, who works in commercial insurance, describe their wedding style as conservative, classy and tasteful.

Oh, and big.

In addition to a small church ceremony at St. Bartholomew’s and a wedding-eve reception at GOP fund-raiser Georgette Mosbacher’s Fifth Avenue home, the couple expects a jaw-dropping 600 guests at their September celebration at the Four Seasons — the first same-sex wedding in the restaurant’s history. The guest list includes three former presidents (George W. Bush, Bill Clinton and George H.W. Bush), two New York governors (Andrew Cuomo and David Paterson), multiple media luminaries (Barbara Walters, Anderson Cooper, Bob Pittman), a secretary of state (Hillary Clinton), two four-star generals (David Petraeus and James Amos), and prominent attorney David Boies, who will serve as best man.

And what’s in store for all those boldface names?

“A tremendous, very masculine party. It’s going to be one of the most exciting events the Four Seasons has ever done,” says restaurant co-owner Julian Niccolini, who hinted at a floating wedding cake bobbing in the pool and a performance by the New York Pops orchestra.

White, 44, and Eure, 31, will be decked out in Hugo Boss tuxes, and they’ve asked guests to arrive in black tie.

“Women are always worried about upstaging the bride,” points out Eure.

“There’s no bride in this wedding, so I want everyone to look their best and dress gorgeously.”

In fact, the couple is steering clear of any “man and woman” wedding traditions. No walk down the aisle, no cake cutting, no Tiffany’s registry (the couple’s asking gift-inquiring guests to donate to the Wounded Warrior Project), not even a lip lock at the end of the night.