Common performs for Olivia Munn and Kim Kardashian to celebrate the USA Basketball team and Jeep; Will Ferrell, Michael Chow and other big supporters of LACMA attend the annual Collectors Committee dinner gala and view the new works of the permanent collection; Tobey Maguire, Ben Affleck and more show support for arts education at the Children Mending Hearts Spring Benefit; Ian Somerhalder hosts a private charity dinner event in Bel Air; Johnny Knoxville, Julie Bowen and Anthony Kiedis celebrate Earth Day at the Annenberg Community Beach House—it was another busy weekend of events and fundraisers here in L.A. and we have the details on what went down in this edition of Last Night's Parties. More»

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How do cool parents celebrate Earth Day with their kids? With live performances by very famous musicians, edible art projects, fossil digs, manicures and DJ lessons on the beach in L.A., as was the case at the book launch of Last Night I Swam With A Mermaid yesterday at the Annenberg Community Beach House where hip moms and dads like Julie Bowen, Jason Bateman, Johnny Knoxville and others stepped out for the family friendly occasion. More»