Jennifer Lawrence and Leonardo DiCaprio toast champagne while Charlize Theron and Bill Clinton trade fedoras backstage at the GLAAD Media Awards; Demetri Martin and Molly Ringwald debut their tomes at the Festival of Books; David Arquette and James Van Der Beek attend the Ballet Rubies Gala; Jeffrey Deitch, Ellen Pompeo and Terry Richardson hit up the "Yesssss!" 2013 MOCA Gala; the brothers Hemsworth aren't too cool for school at the City Year Los Angeles' Spring Break: Destination Education Party—were you at Coachella Weekend 2? These celebs weren't either. Check them all out at L.A.'s top events in this weekend edition of Last Night's Parties.

St. Patty's Day is nigh, and we here in Los Angeles aren't going to let cities with large Irish communities have all the fun (hear that, Boston, Philly, Dublin, etc.?). In fact, we've even covered a bunch of local spots around town where Angelenos are welcome to celebrate like it's March 17th any day of the year. But with Sunday being the official day designated for all to embrace their inner Irishman, there are a myriad of green beer and Jameson-fueled events beginning as early as this evening to get your liver warmed up and all the way through to the sacred holiday on Sunday. Grab a hold of your Guinness and shillelagh, as we bring you the best throwdowns, pub crawls and street festivals in our 2013 St. Patrick's Day Weekend Party Guide. [Photos via, via, via,]

Go HERE for more photos by Eric A. Reid and tag yourself and your friends!

As the unrelenting beast known as awards season rolls on, last night's 2013 Writers Guild of America, West Writers Guild Awards honored those responsible for creating the memorable roles that make movie and TV stars. Hosted at the JW Marriot at L.A. LIVE, familiar faces such as Amy Poehler, Jessica Chastain, Francis Ford Coppola, Aubrey Plaza and many more stepped out to celebrate these forces behind the camera. Among the night's winners were Vince Gilligan for "Breaking Bad," Chris Terrio for Argo, "Mad Men" creator Matthew Weiner, and Mark Boal for Zero Dark Thirty. Keep clicking through the slideshow to see them all on last night's red carpet.

Anne Hathaway and Dylan McDermott step out to support Jane Fonda and the One Billion Rising campaign kickoff; Kate Bosworth, Demi Lovato and Blood Orange take over The Grove for the grand opening of Topshop Topman; Naomi Watts, Robin Tunney, friends and family celebrate Simon Baker's star on the Hollywood Walk of Fame; fans fill the house at the Nokia Theatre to see Ne-Yo, T.I., and other acts perform at the Power 106 Valentine's Crush show—catch up on Thursday's action across L.A. in this installment of Last Night's Parties.

Ryan Gosling, Emma Stone and Sean Penn face a mob of fans at the world premiere of Gangster Squad; Julie Benz and Naomi Campbell discuss their new shows at NBC/Universal's 2013 Winter TCA Tour; Blake Griffin and Kevin Hart put on bowling shoes for the Chris Paul PBA League All-Stars Invitational Bowling Tournament; Adam Duritz and other musicians step out for the L.A. premiere of Freeloaders—all this and more (even dogs!) in this installment of Last Night's Parties.

[Paul Rudd, Megan Fox] [Iris Apatow, Judd Apatow, Maude Apatow, Leslie Mann]

Judd Apatow, Megan Fox, Leslie Mann and more attend the This is 40 premiere at Grauman's Chinese Theatre; Melissa Peterman and Bruce Vilanch host the 14th Annual Women's Image Network Awards at Paramount; Bella Thorne, Kyle Richards and others skate at L.A. Kings Holiday Ice at L.A. LIVE for Disney On Ice; Mary-Kate and Ashley Olsen celebrate the launch of The Row and Damien Hirst collaboration Pills backpack at Just One Eye gallery; Louise Roe, Jesse Metcalfe and more gather at the Winklevoss house for the Hukkster holiday party—take a look at Wednesday's top events around town in this edition of Last Night's Parties. More>>

Judd Apatow, Megan Fox, Leslie Mann and more attend the This is 40 premiere at Grauman's Chinese Theatre; Melissa Peterman and Bruce Vilanch host the 14th Annual Women's Image Network Awards at Paramount; Bella Thorne, Kyle Richards and others skate at L.A. Kings Holiday Ice at L.A. LIVE for Disney On Ice; Mary-Kate and Ashley Olsen celebrate the launch of The Row and Damien Hirst collaboration Pills backpack at Just One Eye gallery; Louise Roe, Jesse Metcalfe and more gather at the Winklevoss house for the Hukkster holiday party—take a look at Wednesday's top events around town in this edition of Last Night's Parties.

Barry Manilow and Cody Simpson perform at L.A. Live to benefit non-profit organizations for hunger and light the Holiday Tree; Gerard Butler, Dennis Quaid and other stars of Playing For Keeps attend a screening to benefit Children's Hospital Los Angeles; "Real Housewives of Beverly Hills" gather at Kyle by Alene Too to support the Bullets 4 Peace Charity; Kristin Stewart, Elle Fanning, William H. Macy, Garrett Hedlund and more visit a private residence for the first day of the Variety Studio: Awards Edition presented in partnership with Rolls Royce and Nintendo—get the details on who was out where yesterday in this installment of Last Night's Parties!

Go HERE for more photos by Jessica Velasco-Guzman and tag yourself and your friends!

Last night, L.A. LIVE hosted its 5th Annual Holiday Tree Lighting event, kicking off a season of holiday spirit with live music from artists like Cody Simpson, Eric Benet and Barry Manilow, ice skating and of course its majestic sparkling tree.