Happy 4/20, everyone! No, we're not talking about Hitler's birthday, or even the creation of Wisconsin; today's the day that stoners everywhere do what they'd probably be doing anyway– smoke weed all day. Here in L.A., where it's probably more acceptable in certain social circles to light up a gigantic, Purple-Haze-filled blunt than to, say, talk about your support of Mitt Romney, you could see April 20th as just another day. But where's the fun in that? In that spirit, we present a special 4/20 edition of The WeedDown, our monthly feature collecting the latest stories, news and humorous items related to the sticky icky icky. More»

Katy Perry, Emma Stone, Heidi Klum, Adam Sandler and more hit the Orange Carpet for the green slime-filled Nickelodeon Kids' Choice Awards; Anna Paquin, Sandra Oh, and Cat Deely hand out the awards for the nation's most talented student film makers in Hollywood; Elijah Wood, Jaime King and Edward Norton prove step out in support of the great majority at the All In For The 99% Event on Saturday night—from awards ceremonies and "Mad Men"-inspired soirees, we have the scoop on who partied where this weekend in L.A. in this Monday edition of Last Night's Parties! More»

A plunging neckline-wearing Jennifer Aniston, Elizabeth Olsen, Amber Heard, and Reese Witherspoon step out for Elle's salute to women; Kristin Cavallari celebrates her new gig with Chinese Laundry at The Redbury; Julie Bowen and Jason Alexander attend a cabaret to raise funds for breast cancer research; Lauren Santo Domingo, Selma Blair, and a bunch of other chic people gather in Bel Air to party with Derek Blasberg—special things happened all over town yesterday so get all the details in this edition of Last Night's Parties.

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[Shiva Rose, Laura Harring, Marisa Tomei photo via] Marisa Tomei, Minnie Mortimer, Lydia Hearst and other L.A. fashion elites gather at Soho House for an event hosted by Liz Goldwyn and Chanel; Jason Alexander, Karina Smirnoff, Ryan Eggold and more try their luck in a poker tournament to raise funds for Lupus LA; Colbie Caillat performs for an intimate crowd to benefit VH1's Save the Music Foundation; Lisa Vanderpump, Adrienne Maloof, and Camille Grammer thow a joint birthday celebration with the other "Real Housewives of Beverly Hills" cast members at Sur; More»

• Looks like cops cracked the case of the "4G" iPhone prototype that was found and sold to Gawker's Gizmodo for $5,000 [cnet]
• "Seinfeld's" Jason Alexander accidentally hits teenage biker with his car in Mid-City area [Huffington Post]
• Don't you want a map of the 50+ new faults discovered in CA over the last two decades hanging on your wall? [LATimes]
• Pause: How did no one know that Sandra Bullock adopted a baby IN JANUARY?? [Eonline]
• TMI alert: Larry King and wife Shawn Southwick were swingers. Horrifying... [NYPost]

[All photos by BEN GABBE for PMc]. Last night, Ragtime opened at the Neil Simon Theater. Mad Men's Bryan Batt, Kathie Lee Gifford, Nancy Pelosi, Jason Alexander, Mario Cantone More»