UPDATE 1/20: The designer is no longer a secret. Read all about Michelle Obama's gown by Jason Wu.
The designer of Michelle Obama's inaugural gown may not be revealed until that day, according to The Washington Times:
An aide to Mrs. Obama who asked not to be identified confirmed that "an announcement may not be made until Tuesday."
Traditionally this information has been released in advance of the swearing in, but this time around everyone will just have to speculate a little longer.
Or read more inauguration style news