Emily says the Chuppah will be made of intertwining branches for a simple, natural look and in keeping with the "simple elegance" she and Ross want for the event.

Emily will wear a strapless Maggie Sottero gown from Betsy Robinson.

"It's chiffon, and very simple," she says. "I felt like all the other dresses I was trying on were weighing me down. It has a corset back so I like the shape of it." .

She'll be carrying a bouquet of white hydrangeas and roses, with some purple-throated calla lilies mixed in.

That color will tie in with the dark plum gowns — also from Betsy Robinson — being worn by five bridesmaids and Emily's two maids-of-honor; her sisters, Julie, 22, and Annie, 20. All of them will carry all-white bouquets.

All the flowers are being done by J.J. Cummings Floral Co.

Ross will be in a peaked-collar black Ralph Lauren Black Label tuxedo, from the Ralph Lauren store, and a black cummerbund, black bow-tie and small calla-lily boutonniere to match those in Emily's bouquet. And there's something else very important to Emily that he'll have on.

"My grandfather passed away on my birthday two years ago, a month before we met," she says. "And [family members] were able to choose something of his to remember him by. I chose a couple of pairs of his cufflinks. I gave them to Ross a long time ago. And he recently told me he was planning on wearing those during the wedding. They're gold horseshoes. My grandfather owned racehorses. Those [cufflinks] were very special to him."

His best man — brother Marty, 29 — and six groomsmen are each wearing their own tuxedos and will also wear black cummerbunds and bow-ties.

A cocktail hour and seated dinner will follow the ceremony.

The couple is going for elegant, all-white decor. J.J. Cummings is doing two different types of centerpieces for the tables. One type will feature large balls of white flowers atop tall inverted cone-shaped glass vases. The other will be tall glass cylinders with flowers submerged underwater.

Menus will await each guest, so they can choose an entree of tenderloin or halibut.

SugarBakers Cakes is doing an elegant four-tiered white-on-white wedding cake — vanilla cake with raspberry filling and buttercream frosting — decorated with an iridescent "ribbon" of icing and big white flowers. A dessert bar will offer other sweet treats.

There will be a break between each course with music from the Washington Talent Agency band, Spectrum.

"To keep people dancing through the night," explains Emily.

Emily and Ross have chosen their favorite song — "Hallelujah" — for their first dance, and Louis Armstrong's "It's a Wonderful World" for the father-daughter dance.

The couple's monogram also plays a role in the wedding. It was on the invitations, and will be on the aisle to the Chuppa, and in a spotlight on the dance floor.

The honeymoon: "We're going to Bora Bora," says Emily. "We're so excited. We're staying at the Intercontinental."

"We wanted it to be a beach honeymoon," says Ross. " We were looking online and saw the over water bungalows and were sold from there."