A plunging neckline-wearing Jennifer Aniston, Elizabeth Olsen, Amber Heard, and Reese Witherspoon step out for Elle's salute to women; Kristin Cavallari celebrates her new gig with Chinese Laundry at The Redbury; Julie Bowen and Jason Alexander attend a cabaret to raise funds for breast cancer research; Lauren Santo Domingo, Selma Blair, and a bunch of other chic people gather in Bel Air to party with Derek Blasberg—special things happened all over town yesterday so get all the details in this edition of Last Night's Parties.

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[Reese Witherspoon, Jennifer Aniston photo via]

Nicky HiltonLauren Santo DomingoKristin CavallariReese WitherspoonDerek BlasbergCalvin KleinRachel Zoedonna karanErika ChristensenFrancisco CostaBalthazar GettyJennifer AnistonJonathan SaundersDavid YurmanFreida PintoBryan BattNicole RichieJenna DewanJoe ZeeViola DavisLyle MaltzVirginia MadsenSelma BlairMichelle PfeifferNaomi WattsTara SubkoffAmber Heardkatherine heiglAmber VallettaDana LorenzRachel AntonoffStephen DorffLinda EvangelistaKevin O'MalleyKatie FinneranThe Four SeasonsJason AlexanderWolfgang PuckRobin Wright PennChelsea HandlerAlia ShawkatJulie BowenIan SomerhalderCarlos LopezCamila AlvesMelissa CokerGillian JacobsDavid E. KelleyJoel McHaleAdam ShankmanEllie KemperLisa EisnerMagda BerlinerThe AvalonThe RedburyAtmosphereChloe MOretzRosetta GettyShiva RoseLaura DernKatherine PowerElizabeth OlsenLouise RoweSybil YurmanJayma MaysAlice EveBusy PhilippsSpencer FallsSarah CarrollCobie SmuldersGelila PuckOctavia SpencerHedi GoresPeter PilottoAnita ThompsonAlyssa CampanellaBryan FerrySamantha TrainaStacey SniderDarren StarMelora HardinHotel Bel-AirELLE's 18th Annual Women in Hollywood Tribute - Red CarpetFour Seasons Hotel Los Angeles at Beverly HillsAnne FletcherJohn Hawkes Josh KelleyChinese Laundry Celebrates Kristin Cavallari As Their Web AmbassadorJanelle OrtizColin Owen.LES GIRLS 11 Celebrity CabaretAdrienne FrantzBarrett FoaGina TorresLaura Bell BundySarah ChalkeScott BaileySharon Lawrence Steven WeberTommy Chong.Moda Operandi Hosts Party to Celebrate Derek Blasberg's Very Classy