Katy Perry, Pharrell Williams, Dave Grohl, and other music stars join Ringo Starr and Paul McCartney on stage for A Grammy Salute To The Beatles event; Zac Efron, Taylor Swift, Michael B. Jordan, Miles Teller, and more attend the premiere and after party for That Awkward Moment; Jessica Alba, Neil Patrick Harris, Gwyneth Paltrow, and others from Hollywood's A-list attend the Hollywood Stands Up To Cancer fundraiser hosted by Reese Witherspoon—catch up on Monday and Tuesday's top L.A. events with this edition of Last Night's Parties.
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.jpg "Worldly Socialite Haya Maraka's Elegant Etiquette Tips For The Modern Lady")
.jpg "Haute Hostess Christine Chiu's Guide To Throwing The Most Fabulous Fête")
