Ben Affleck, Lea Michele, Kristen Bell, Olivia Munn and more hit the blue carpet at the Do Something Awards; AnnaLynne McCord and Serinda Swan are among the many guests at Friends to Mankind's fundraising event; Dita Von Teese and Rose McGowan join Linda Ramone at the Hollywood Forever Cemetery for a Johnny Ramone Tribute; Brittany Snow, Jessica Stroup and others help raise funds for the Leukemia and Lymphoma Society—it was a very big weekend for celebrities giving back and we have the details on the top events around town in this installment of Last Night's Parties.

Sophia Bush, Lea Michele, Kristen Bell [via]

AnnaLynne Mccord Karina Smirnoff Taryn Manning Ne-Yo Will.I.Am Sophia Bush Rose McGowan Dita Von Teese Brittany Snow Jessica Stroup Kristen Bell Nick Cannon Maria Menounos Alek Wek Aubrey Plaza lea michele VH1 Flo Rida Kelly Osbourne taylor spreitler Ashley Greene Keke Palmer Ben Affleck Dax Shepard Palihouse Bryan Cranston John Cho Eva Amurri Nikki Reed Giuliana Rancic Bill Rancic Chris Holmes Olivia Munn Ellie Kemper Willa Ford Leukemia and Lymphoma Society Nicole Murphy chris bosh Hollywood Forever Cemetery Linda Ramone Cory Monteith Barker Hangar Somaly Mam FOundation Jacki Weaver Cassie Scerbo Bella Thorne Mike Schmidt Michael Steger Anna Trebunskaya Hope Solo Lexington Social House Henry Rollins Melyssa Ford Stephen Bishop Chloe Flower Shay Mitchell Serinda Swan Adrienne Williams Renee Olstead Priscilla Presley Tommy Ramone Jo Champa Ally Maki Haley Reinhart Riley Smith Master P Jimmi Simpson Nate Ruess Jack Antonoff Laura Govan Colin Ferguson Jessica Lu CAN.PARTY! Fundraiser Event Josh Beech Amber Wallace Sarah Hagan Lindsey McKeon Amanda Fuller Kevin Pasdon Friends To Mankind's 2nd annual #18for18 Fundraiser Friends To Mankind's 2nd annual 18 for 18 Fundraiser Holli Starr Jay Harrington Friends To Mankind 18 for 18 Project Rescue skydive 8th Annual Johnny Ramone Tribute USC Westside Prostate Cancer Center Johnny Ramone Research Fund And VH1's 2012 Do Something Awards 2012 Do Something Awards Tristan Klier Andrew Dost Charity Shea Grace Valerie