President Barack Obama and first lady Michelle Obama arrive to dance together at an Inaugural Ball on Monday, January 21, 2013, at the Washington Convention Center.

Washjington - It was one of the biggest questions of Monday’s inaugural celebrations: Not what would President Barack Obama say, but what would his wife, Michelle Obama, wear?

The first lady cemented her reputation as an international style trendsetter with her choice of a Jason Wu red sleeveless ball gown in the evening, and a business-style blue navy coat and dress for the daytime events.

It was a huge win for US designer Wu making one of his ball gowns her choice for a second straight inauguration.

The first lady appeared for her first dance of the night with the president at the Commander-in-Chief’s Ball for US service members in a ruby-coloured chiffon and full-length velvet gown custom made by the New York-based designer. Her shoes were from the London-based designer Jimmy Choo.

Earlier, the first lady wore a navy coat and dress by designer Thom Browne. – Reuters