bristol palin memoirBristol Palin's memoir has shown up on Amazon.com, and just like that, there's a perfect preorder for readers interested in 20-year-old moms who are simultaneously 'Dancing With the Stars' alums and daughters of onetime vice presidential nominees.

PoliticalWire spotted the 304-page tome, currently titled 'Untitled Bristol Palin Memoir,' earlier today. The book is listed at $17.15 (save $8.84!) and appears to be set for a June 21 release. How Palin busted out 304 pages from 20 years of life -- or when she managed to do it, with all the televised dancing, Levi Johnston sparring, and moving to the continental U.S. -- is beyond us.

Bristol's memoir will come from William Morrow & Co., an imprint of HarperCollins, which previously published Sarah Palin's 'Going Rouge: An American Life' and 'America by Heart : Reflections on Family, Faith, and Flag.'