Jessica Alba, Nicole Richie, Gwen Stefani, and other famous mommies and daddies attend the Baby2Baby Holiday Party presented by The Honest Company; Vanessa Hudgens celebrates her 25th birthday; Lea Michele, Chord Overstreet, Naya Rivera, and other stars step out for the Switch Boutique holiday party—catch up on L.A.'s top events of the weekend with this edition of Last Night's Parties.

Rachel Zoe Ryan Cabrera Jessica Alba Cash Warren Joel Madden Michelle Monaghan Nicole Richie Molly Sims lea michele Haylie Duff Ali Larter Vanessa Hudgens Alyson Michalka Gwen Stefani zuma rossdale kingston rossdale Vivica A. Fox Madison Pettis jessica capshaw Michael Eisner Julie Bowen Noah Cyrus CAA Rodger Berman Soleil Moon Frye Sarah Ferguson Gene Simmons Chrishell Stause Hollywood Palladium Avalon Hollywood Jennifer Howell George Harrison Jennifer Morrison Darren Criss Jamie Patricof Chord Overstreet Katie Cleary Hayes MacArthur Katherine Power Bella Thorne Rebecca Black Jena Malone Busy Philipps Amanda Michalka James Maslow Janina Gavankar Candace Nelson Pauley Perrette Mireille Enos Naya Rivera Lois Aldrin Jai Rodriguez Rowan Blanchard Kaya Jones Amy Paffrath Penelope Ann Miller Ryan Ochoa Ahna O'Reilly michelle cho Michael De Luca Mary Carey Drew Seeley Austin Butler Christopher Gavigan Hoodie Allen Kelly Sawyer Patricof Norah Weinstein Ross King Estee Stanley Chaz Dean Teala Dunn Fairmont Miramar Hotel Saye Yabandeh Daphne Wayans Blake Michael Cas Anvar Ireland Baldwin No Vacancy Stella Hudgens Maitland Ward Galen Gering Sara Foster Kate Mansi Jaclyn Betham Elle Evans Kyle Keller Martha Nelems Amber Montana Toks Olagundoye NOH8 Campaign's 5th Annual Anniversary Celebration Rachel Crow Brandon Tyler Russell Rachel Potter Kira Kosarin The Art of Elysium's Little Pieces of Heaven Presented by Hudson Jeans Hello-Products Presents DigiFest LA - The Largest YouTube Music Festival Lia Marie Johnson Kaleb Nation