Rose, a Texan, is also one of Jenna's friends. She and her staff have been busy for months with the attendants serving as the house party.
"There are seven different styles and seven different colors," said Rose, describing the dresses.
Twin sister Barbara, the maid of honor, will a wear a floor-length dress in a deep blue color to match her eyes.
"I absolutely think Barbara will cry -- Jenna and Barbara are so close," said Rose. "You can just tell that they adore one another and they always have."
The bride will wear an Oscar del la Renta embroidered gown, under wraps until Saturday night, so Hager will be totally surprised. She will don iced quartz drop earrings by Texas jeweler Anthony Nak.
President Bush explained his contribution to the wedding in an exclusive interview with "Good Morning America's" Robin Roberts.
"My one contribution is to -- we put a giant cross made out of Texas limestone that will serve as the altar, but also serve as a landmark on our place for years to come," he said.
In recent months, the wedding has clearly been weighing on the president. He often slips wedding lines into his policy speeches to lighten up large crowds.
"I had to face some very difficult spending decisions and I've had to conduct sensitive diplomacy. That's called planning for a wedding," Bush said jokingly to a chamber of commerce audience in March.
The president is preparing for the big event by taking tips from comedian Steve Martin who plays the goofy dad in the "Father of the Bride" movies.
"Laura sends her very best," Bush said Tuesday, explaining that the first lady was en route to Texas for the wedding. "She left behind a DVD -- with Steve Martin. Said you might want to watch this before you head down there yourself."
Laura Bush took time to tell reporters she was thrilled to finally have a son. "It's a very interesting passage of life when you get to that time in your life when your child, first child is getting married. And we're getting, for us, our first son. So it's a thrill and we're very happy about it."
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