Lake Bell, Aisha Tyler and Rob Schneider celebrate the Golden Trailer Awards; Elton John performs for guests like Rod Stewart, Kelly Osbourne, Neil Patrick Harris, Tommy Hilfiger, and more at the Race To Erase MS Gala; Ellen Hollman, Katrina Law and others attend a BritWeek celebration of "Downton Abbey"; Jason Bateman, Portia De Rossi and fellow Bluth family members step out for an "Arrested Development" press event; Amber Valletta, Angie Harmon, Monique Lhuillier and other fashionistas toast the forthcoming Wallis Annenberg Center for the Performing Arts with Ferragamo at Gagosian Gallery; Cobie Smulders, Mike White, and more dance for cancer research—get caught up on the weekend's top happenings in this edition of Last Night's Parties.
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