DS is older and got the 16 x 10 bedroom, DD got the 9 x 10 bedroom.
DS moved out, we expected DD to want his room. She wants nothing to do with it.
Of course she has a single loft bed with 2 dressers under it, DS's room has a double bed, and dresser against the wall, so, because of the furniture, her smaller room actually has more move around space.