Bristol Palin is swapping lives with Melissa Rivers for the upcoming season of "Celebrity Wife Swap," premiering June 23. Surprising no one, ABC's press release indicates the Palin household, in Alaska, is the one that lacks structure (in the episode, Rivers breaks out the trusty sticker chart) and the Rivers household, in Los Angeles, is marked by "formality and schedule." More intriguing is the role of Bristol's younger sister Willow, who apparently plays spoiler to Rivers' attempts to implement discipline. Perhaps the 19-year-old daughter of former Gov. Sarah Palin has more in common than the world ever knew with 80-year-old Joan Rivers, who as grandmother of 12-year-old Cooper could play a parallel role to Aunt Willow back in L.A.