Many Washingtonians know Julia Sacasa best as her dad's assistant -- "I was his 'everything' -- right hand, left hand, companion to fill in for my mother," when Sevilla-Sacasa was ambassador from Nicaragua and dean of the Washington diplomatic corps. During that period both Julia Sacasa and her mother were very much involved in fashion. So it is no surprise that Julia's store, called Julia S., in White Flint is already off to a big success.

"We always had a sewing room at the embassy. I would sit for hours with the seamstresses watching the clothes being made for my mother, myself and three sisters. Occasionally I would dare to give some input into the designs," says Sacasa.

She finally dared to create her own collection, clothes for children sold through Washington stores, and later managed the White Flint boutiques, first Cache and then Signatures.

Sacasa now is out on her own again with Julia S., where the emphasis is on customer service, including having a designer on the spot for custom-designed clothing. "And when necessary, I'll cover every other shop on the mall to help my customers find the accessories they need to get the total look together."

Among those who have already signed up for Julia's help are Margaret J. Seagear, executive director of the White House Initiative at the Department of Education, and others Sacasa, diplomatically, would not reveal.