Jill Biden wore a design from Gabriela Hearst. Handout/Biden Inaugural Committee via Getty Images For the concert, Biden wore an ivory outfit from Uruguayan-American designer Gabriela Hearst. Hearst shared on Instagram that each flower took between two to four hours to embroider, and the Delaware flower was placed near Jill's heart to represent her home state. "The message of Unity is the main inspiration for the creation of the Ensemble," Hearst wrote in her caption. "Unity makes strength and it is needed for the road ahead. The blooming symbol to represent this message are the federal flowers from every state and territory of the United States of America."