She is Required to Hire an Interior Decorator
Once her husband has taken office and the First Family has moved into the White House, the First Lady is required to hire an interior decorator to help redecorate the rooms under her authority. This is one of many instances in her duty as First Lady where the President’s wife is encouraged to tap into her creative juices and personal tastes. Most recently, First Lady Melania Trump hired interior decorator Tham Kannalikham to give the private quarters of the White House a makeover and place to call home for the First Family.
This is one of the wilder First Lady rules we know of.