Mona and Dee Dee are half-sisters who share the same father. They are completely unlike each other, but they live in the same apartment building, so disagreements are common.
Did You Know?
In the pilot, Mona moves to the upstairs apartment which is on the right. Later, when Dee Dee is renovating it, it's on the left. See more
Big Dee Dee Thorne
[after Dee Dee's new jacuzzi leaks into Mona's apartment and floods it
Oh, my. Is that mildew I smell or Phyllis's wet hair?
If you don't want me to use that cheap wig as a mop, I suggest you shut your trap.