Pippa Middleton's Middling Party-Book Sales, Kris and Bruce Jenner Laugh Off Divorce Rumors and Other Must-Read News

Recapping the evening's buzziest news, including Robsten's party antics in Madrid and Kim Kardashian's glam night at the Marine Corps Ball

Pippa Middleton's party is going bust.

Despite a heavily hyped promo blitz for her new party-planning book, Celebrate, Kate Middleton's little sis is proving to be anything but the best-selling author: Her tome moved a paltry 2,189 copies in its first week in the U.K., per the New York Daily News.

The book's publisher, Penguin—who supposedly shelled out a $600,000 advance—reportedly refuses to disclose total worldwide sales figures to date. Things, however, aren't looking up for the critically savaged book: It's currently ranked 529 on Amazon's best-seller list.

Guess Prince William's sister-in-law is learning a hard, cold truth: Even the most hoppin' parties come to an end.

Pippa Middleton launches new party-planning book, joins kids for crafting workshop

Here's what else went down:

Heading to Splitsville?: Calm down, people. Kris and Bruce Jenner aren't getting a divorce. 

Lady in Red: Hubba, hubba! Kim Kardashian rocked her kurves at the Marine Corps Ball.

Vampire Party: Robert Pattinson and Kristen Stewart showed off smiles while at the Breaking Dawn Part 2 after-party in Spain.

Shocking Reveal: Dog Whisperer star Cesar Milan admitted to contemplating suicide two years ago.

TV Land: Get the recaps for Jersey Shore, Grey's Anatomy and The X Factor.