Sienna Miller gets honored for her humanitarian work; Christina Aguilera and David Arquette step out for a very Bolthouse video game launch blowout; Malcolm McDowell and more have a post-premiere celebration at The Little Door — there was quite a range of events last night, let's discuss in this edition of Last Night's Parties. MORE>>

AFI Festival is still going strong with stars like Jeremy Piven and Rob Lowe hitting up the premiere of I Melt With You. Plus, Immortals 3D premieres at Nokia Theatre, and TV Guide hosts their annual "Hot List Party." MORE>>>

Michelle Williams, Jennifer Garner and more attend special screenings of their films showing in the 2011 AFI Fest; Robert Pattinson, Jon Hamm and more honor the work of those behind the scenes in entertainment; the first ever LACMA Art + Film gala co-hosted by Leonardo DiCaprio brings out one of the most star-studded crowds we've ever seen. MORE>>

You're Belfast, and now that "dying in a fiery explosion" is no longer on the list of tourist activities, you're lacking a young, cosmopolitan appeal. What better way to seamlessly transition from political terrorism to cultural terrorism than by hosting the  MTV Europe Music Awards? MORE>>

The "new Paul & Andre spot" opens for business tonight, called Smoke & Mirrors, except there's no Andre in the equation, only Paul. And yes, it is indeed in the old Purple Lounge of The Standard Hollywood space. I'll say that again: that "new P&A spot" has taken the place of the long forlorn Purple freaking Lounge at The Standard. MORE>>

Eva Longoria and Selena Gomez step out for a fundraiser co-hosted by Jason Segel and  Kermit the Frog; Stevie Wonder, Pras and more perform at the "Never Again" benefit concert; Emmy Rossum, Danny Masterson and others attend an eyewear line event at Confederacy hosted by Ashton Kutcher, check out what happened in L.A.! MORE>>

Derek Blasberg, Francisco Costa, Georgina Chapman and Elizabeth Saltzman choose winners for the 2011 Dorchester Collection grand prize; Russell Brand is named Man of the Year by Friendly House LA—believe it or not, there were some non-Halloween events that happened this weekend in Los Angeles. MORE>>

Well Jiminy Christmas! In what we knew was only a matter of time, Kim Kardashian has officially filed for divorce from that guy who will recede right back into total irrelevance at the end of the New Jersey Nets' bench after just 72 days of holy matrimony. MORE>>

Agyness Deyn rocks with Black Rebel Motorcycle Club and AllSaints; Emma Stone, Michelle Williams George Clooney and Stacy Keibler step out for the Hollywood Film Awards. Let's hold hands as we walk you through today's edition of Last Night's Parties. MORE>>

Rachel Zoe and Quincy Jones present awards to Iman and Missoni on Rodeo Drive; Zoe Saldana hosts Gen Art's Fresh Faces in Fashion downtown; Elisabetta Canalis joins Chaz Bono for his GLSEN Respect Award ceremony and so much more! MORE>>