Lake Bell, Aisha Tyler and Rob Schneider celebrate the Golden Trailer Awards; Elton John performs for guests like Rod Stewart, Kelly Osbourne, Neil Patrick Harris, Tommy Hilfiger, and more at the Race To Erase MS Gala; Ellen Hollman, Katrina Law and others attend a BritWeek celebration of "Downton Abbey"; Jason Bateman, Portia De Rossi and fellow Bluth family members step out for an "Arrested Development" press event; Amber Valletta, Angie Harmon, Monique Lhuillier and other fashionistas toast the forthcoming Wallis Annenberg Center for the Performing Arts with Ferragamo at Gagosian Gallery; Cobie Smulders, Mike White, and more dance for cancer research—get caught up on the weekend's top happenings in this edition of Last Night's Parties.

George Clooney belts out "Sweet Caroline" with Neil Diamond for Jane Fonda, Stacy Keibler and Nicky Hilton; Brian Grazer is honored by the Alfred Mann Foundation; Dita Von Teese, Marisa Tomei and Kristin Davis fete Cameron Silver's new fashion tome at Chateau Marmont; Jon Hamm, Anna Faris, Jeremy Renner and others attend the Reel Stories, Real Lives fundraiser; Travis Barker, Hugh Hefner and Brody Jenner help Snoop celebrate his birthday at the Playboy Mansion—it was quite the weekend here in L.A. and we have the rundown on the biggest and best events that went down in this edition of Last Night's Parties.

Leslie Mann, Jeff Garlin, Judd Apatow, Anna Kendrick and many more hit the family-friendly premiere of ParaNorman; Betty White hosts the 35th anniversary "Hooray For HollyWOOF" fundraiser party; Ashley Greene, Kellan Lutz and others celebrate the launch of Carbon Audio's Zooka tablet speakers in West Hollywood—for those who weren't getting their rage on at Lolla or HARD Summer, there was plenty else to going on to keep busy around town this weekend and we have the details on it all in this edition of Last Night's Parties. More»

Leslie Mann, Jeff Garlin, Judd Apatow, Anna Kendrick and many more hit the family-friendly premiere of ParaNorman; Betty White hosts the 35th anniversary "Hooray For HollyWOOF" fundraiser party; Ashley Greene, Kellan Lutz and others celebrate the launch of Carbon Audio's Zooka tablet speakers at Soho House—for those who weren't getting their rage on at Lolla or HARD Summer, there was plenty else to going on to keep busy around town this weekend and we have the details on it all in this edition of Last Night's Parties.MORE>>

David and Victoria Beckham mix it up with Marc Anthony and his new lady friend and fundraiser for Cedars-Sinai; Courtney Love, Brent Bolthouse and Ashlee Simpson show their support for the L.A. Gay & Lesbian Center; Kristen Bell, Jeffrey Deitch, James Franco and more step out for a special presentation of MOCA's "As It Lays"; Emma Roberts, Francesca Eastwood, Britney Snow and more hit the one-night only presentation of Tyler Shields' latest collection of photography; Khloe Kardashian, Lamar Odom, Kathy Hilton and many others attend the 19th Annual Race to Erase M  fundraiser—it was quite a busy weekend for L.A. so get comfortable as we bring you the rundown of who partied where in today's edition of Last Night's Parties. More»

In case you don't have time in the day to read US Magazine (what are you, employed?), you might not realize that stars are just like us, but they are! They go grocery shopping, most of them know how to read, and they even round up their friends to hit up Coachella, as we know from our Weekend 1 Celebrity Sightings. And it didn't stop for Weekend 2, as Hollywood stars faced down the triple-digit desert heat and turned out in droves. More»

The 54th Annual Grammy Awards takes over the Staples Center; Paris Hilton and Afrojack attend EMI's Grammy after party; Tony Bennett and Diana Krall perform at Clive Davis and The Recording Academy's Pre-Grammy Gala; Ne-Yo and Compound Entertainment throw a Pre-Grammy midnight brunch; Kelly Clarkson and John Legend attend Sony Music Group's Grammy Reception at Cecconi's; Bruno Mars performs at Warner Music Group's Grammy Celebration hosted at Chateau; Jay-Z's Roc Nation holds a pre-Grammy brunch at Soho House; MusiCares honors Paul McCartney as person of the year and raises $6.5 million for artists; Cash Money Records holds their 3rd annual pre-Grammy Awards party with Lil Wayne and Drake; Flo-Rida and Pia Toscano rock the house at OK! Magazine's pre-Grammy event—Los Angeles was alive with music this weekend and we've got your inside scoop on all the festivities and the celebrities who attended them in this edition of Last Night's Parties! More»

Ashley Tisdale, Vanessa Hudgens, Rachel McAdams

Vanessa Hudgens, Rachel McAdams, The Rock and more step out for a Hollywood premiere; Kat Von D debuts her art for Sephora; Daniel Radcliffe gets a surprise marriage proposal from an adoring fan on the red carpet at The Grove; Reggie Bush makes his foray into DJing at Wilmer Valderrama's birthday throwdown at Greystone Manor—get the details on who was partying where on Thursday in L.A. to get a head-start on the weekend in this edition of Last Night's Parties! More»

Unfortunately for Reggie Bush, the Miami Dolphins are not going to the playoffs this year. It's not Reggie's fault; he had his best ever NFL season and proved his viability as an every-down back. Nor is it linebacker (and friend of Party Baby) Shaun Phillips' fault that the Chargers didn't make it; both teams had bigger problems. But regardless, they need a hobby for a few months, and it looks like they found it in DJ'ing, as their newly formed Black House Junkies crew took center stage at Greystone Manor last night, where they guest DJ'ed Wilmer Valderrama's 32nd birthday party. Let's see how they did! More»

HBO kicked things off at Circa 55, where guests like Jane Fonda, Guy Pearce, and Ewan McGregor, and winner Claire Dane munched on beef tenderloin and sipped martinis. NBC had A-listers Jon Hamm, Colin Firth, and Nicole Richie schmoozing under the stars at the Beverly Hilton rooftop - right across from where Harvey Weinstein kept the company of Golden Globe winners Meryl Streep and Jean Dujardin, as well as Leo DiCaprio and countless other guests at his annual party. See this and so much more on our Golden Globes after party round up... MORE>>

After the awards ceremony winded down, celebrities dispersed into the night and the red carpets were rolled out yet again, mostly decking the halls of the Beverly Hilton, where the majority of Sunday's after parties were held. HBO kicked things off at Circa 55, where guests like Jane Fonda, Guy Pearce, and Ewan McGregor, and winner Claire Dane munched on beef tenderloin and sipped martinis. NBC had A-listers Jon Hamm, Colin Firth, and Nicole Richie schmoozing under the stars at the Beverly Hilton rooftop - right across from where Harvey Weinstein kept the company of Golden Globe winners Meryl Streep and Jean Dujardin, as well as Leo DiCaprio and countless other guests at his annual party. More»