Ellen Pompeo, Hailee Steinfeld and Amy Smart step out for the 1st Annual Children Mending Hearts Style on Sunday event; Jennifer Aniston, Snoop Lion, Ben Affleck, Olivia Wilde and many more celebrate Spike TV's "Guys Choice 2013" awards; Corey Monteith, Colin Farrell and Lea Michele gather for the 12th Annual Chrysalis Butterfly Ball; Cameron Silver, Ed Begley Jr. and other notables come together for Global Green USA's Millennium Awards; Ciara performs at LA Pride 2013; Elsa Pataky and Aimee Teegarden visit Nautica & Oceana's Inaugural Oceana Beach House Event; Khloe Kardashian and Julianne Hough party at Maria Menounos' birthday bash; Bob Barker and Drew Carey care for animals at the Mercy For Animals "Free To Be" event—get caught up on the weekend's top happenings in today's edition of Last Night's Parties.

Russell Simmons Michelle Trachtenberg Colin Farrell Julianne Hough Chris Pine Vince Vaughn Khloe Kardashian Perez Hilton Greg Lauren Kim Raver Ciara Jessica Alba Oceana Fran Drescher Snoop Dogg ELIZABETH BERKLEY Andy Samberg Cameron Silver Cat Deeley Jake Gyllenhaal Bradley Cooper Henry Cavill Angela Lindvall Hilary Duff Jamie Foxx Maria Menounos Global Green Buzz Aldrin lea michele Quincy Jones QuestLove Russell Crowe Amy Adams Vin Diesel Mark Wahlberg Ali Larter Amy Smart eric dane rebecca gayheart Carly Steel Jamie Chung Kevin Zegers minnie driver Ellen Pompeo Spike TV Olivia Wilde sebastian copeland Joseph-Gordon Levitt Regina King Derek Hough Colin Egglesfield Ben Affleck Gloria Allred Clint Eastwood Jesse Jackson JJ Abrams Elsa Pataky Jeff Bridges Bryan Greenberg Christine Teigen Brad Goreski Patti Stranger Topher Grace Terrell Owens Rodger Berman Kris Jenner emily schuman Kaley Cuoco Soleil Moon Frye Adam Shankman Kelly Preston Jorma Taccone David Spade Jackie Chan Aloe Blacc Jimmy Kimmel Mary Lynn Rajskub Ed O'Neill Matt Barnes Gabrielle Reece Jennifer Anniston Seth Macfarlane James Costa Jennifer Tilly Justin Gimelstob Kyle Richards Lisa VanderPump Ed Begley Jr. Jeffrey Ross Matt Petersen Hailee Steinfeld Akiva Schaffer Keltie Colleen David O. Russell Jason Sudeikis Guy's Simone Reyes GW Bailey Byrdie Bell