Chaka Khan celebrates her 60th birthday with Quincy Jones and other friends at Yamashiro; Julie Bowen, Aaron Sorkin, Heather Graham, Seth Rogen and more show support at an Evening Benefiting the L.A. Gay & Lesbian Center; Marisa Tomei, Emily Mortimer and Mena Suvari have dinner with Mulberry at Chateau Marmont; Anthony Kiedis, Flea and Rose McGowan are among the many to step out for opening night of Charming Baker's art show at Milk Studios in Hollywood; Jason Reitman directs Nick Kroll, Mark Duplass and Michael C. Hall in a live read at LACMA—get the inside scoop on who was out and about at Thursday's top events in today's installment 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.

Jake Gyllenhaal, Anna Kendrick, and Michael Peña are joined by 50 Cent and a pair of gold medal-winning Olympic swimmers at the premiere and after party for End of Watch; David Foster helps present the Rascal Flatts their star on the Hollywood Walk of Fame—it may have been a slow Monday for events in L.A. but that's just because we're gearing up for the Emmys, so get caught up on what went down in this edition of Last Night's Parties. More»

Ke$ha and Lou Adler ditch their signature looks for what could even be construed as formalwear for the 60th Annual BMI Pop Awards at the Beverly Wilshire, where Carole King is honored; Rosie Perez, Tracie Thoms and Diane Neal join Montblanc North America CEO Jan-Patrick Schmitz to announce the 2nd annual 24-Hour Plays Los Angeles charity event; battle rapper Supernatural freestyle raps the new lineup for Rock The Bells 2012, which will be a full weekend event this year featuring a reunited Bone Thugs N Harmony; Scott Caan, John McGinely and Josh Duhamel hit the links for Omega watches in Palos Verdes Estates. Tuesday was an activity filled day for our town's rich and beautiful (or in the case of Lou Adler, just rich), and we've got the rundown in today's Last Night's Parties! More»

Rihanna, Liam Neeson, Taylor Kitsch and a whole host of "Friday Night Lights" actors laugh it up on the red carpet and at the L.A. Live afterparty for Battleship; Gavin Rossdale and Gwen Stefani hold hands on the red carpet for the Heart Foundation Gala, which includes a special performance from Michael Bublé; Katy Perry and Lionel Richie are the big winners at the music business association NARM's annual Awards Gala and dinner party in Century City; SOL Republic launches their new "indestructible" headphone line at Fred Segal Santa Monica with a little help from a plethora of buzzworthy musicians like AC Slater, LA Riots, Epic Twelve and DWNTWN. That's a whole lot for a Thursday night, and we've got all the details for you in this edition of Last Night's Parties! More»

• Is it possible former "That 70s Show" costars Mila Kunis and Ashton Kutcher are nothing more than platonic friends even though they just took a weekend beach getaway near Santa Barbara where they were spotted shopping for flowers? [TMZ]
• Parents, hide the Purell!: there is a dangerous new trend growing amongst teenagers in the L.A. area who are getting creative in how to get their crunk on by drinking hand sanitizer. Whatever happened to the good old days of Smirnoff Ice? [KTLA] 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»

Wolfgang Puck hosts brunch for Les Moonves and Nobuyuki Matsuhisa; Harry Potter wins big at Spike TV's sixth annual SCREAM Awards; Nicole Richie and other honor Justin Timberlake is for being especially green; Scott Caan and Jason Mraz are recognized for their commitment to the Life Rolls On Foundation; Usher and Bono perform while Lady Gaga has a her "first Marilyn moment" as she serenades the former president at the 10th anniversary gala of Bill Clinton's Foundation; More»

Anna Faris, Chris Evans, Emmy Rossum, and Dave Annable step out for the premiere of the new film that ponders the true love and sluttishness in What's My Number?; Hugh Hefner, Jane Fonda, and Carrie Underwood honor Smokey Robinson for his many achievements in music at the 2011 Ella Awards—Hollywood was still feeling the pain from Sunday night's Emmy festivities, but not everyone was too hungover to step out for some fun, so get all the details on Monday's party warriors in this edition of Last Night's Parties. More»

Go HERE for more photos by Santiago Felipe, and tag yourself and your friends!

FFAWN (The Foundation for the Advancement of Women Now, Inc.) celebrated "Mary J. Blige Honors Women Week" last night with a star-studded evening at Cipriani Wall Street. More»