NEW YORK -- New York fashion designer Doo-Ri Chung was on top of the world after Michelle Obama chose to wear one of her creations to Thursday night's state dinner with the South Korean president and his wife.

"I am just thrilled," the still-giddy Chung said Friday after a morning of accepting congratulations from around the country.

The First Lady looked radiant as she stepped out in the stunning one-shouldered number Chung designed.

"We call it 'ultra-violet.' It's an amazing purple," the Korean-American Chung said of the gown's deep, jewel-tone color.

Chung, a Parsons School of Design grad, found out that Obama had chosen the draped, jersey dress only as the dinner was getting underway.

"I was out at an event, and I got a phone call. I was just so excited," Chung said. "I think it's huge that she chose it. As a woman's designer, I have such respect for intelligent, modern women. And who else epitomizes that better than Michelle Obama? I couldn't be more happy. It's truly such a great honor."

Chung and her team had been kept in the dark about whether the First Lady would choose the dress.

"We knew there was a possibility she might wear it, but we were told we wouldn't know until right up until the First Lady decided," she said. "I didn't want to get my hopes up."

Obama's stylist contacted Chung, 38, after seeing a dress in the designer's 2012 show at New York Fashion Week last month.

The original inspiration was "much more risque," with a thigh-high slit, than the gown Chung made for her famous client.

Armed with the First Lady's measurements, Chung and her team worked "for weeks" on the "one of a kind" creation, which featured a chiffon-wrapped waist belt with multicolored crystals.

Chung is known for her beautifully draped jersey creations and was pleased that Obama chose her "signature" fabric for the dress.

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