Princess Peach is now the Queen of the Mushroom Kingdom after her father's death. She was the Princess of the Principality of Toad Town from 1989 to 2001. Back when she was a Princess, she was abducted by Bowser a lot. Most of the Mario games show her back when she was a Princess. Her older sister was Princess Toadstool. It is a mystery why she doesn't upgrade her castle despite all these kidnappings. That indicates that she has a secret affair with Bowser but Doesn't want Mario to know.