Rihanna, Big Boi and Ne-Yo step out for the Island Def Jam Grammy after party; Akon, Kelly Rowland, Gotye, Afrojack, Brandon Boyd and more celebrate with Republic Records; Swizz Beatz, Alicia Keys, John Legend, Rick Ross and more make it out for House of Hype Monster's Grammy after party; Neil Patrick Harris and Bonnie McKee party with Billboard on the roof of The London; Alessandra Ambrosio, Ashley Benson, Sting and others celebrate with Warner Music Group at Chateau Marmont; Red Light Management takes over Skybar for a post Grammy soiree with Natasha Bedingfield among others— get the lowdown on who was out celebrating at L.A.'s top post-Grammy events in this edition of Last Night's Parties!

Jay-Z, Kanye West, Beyonce and others win big at the 2012 BET Awards; music exec Kevin Liles throws a pre-BET Awards pool party with guests Trey Songz and and Estelle; Russell Brand, Sarah Silverman, Jerry Seinfeld and more raise funds for the David Lynch Foundation; Christina Milian, Meek Mill, Tyga and more celebrate the BET Awards with the Cash Money family; SRC Records honor Melanie Fiona with a pre-BET Awards party; BET CEO Debra Lee takes over Union Station for a pre-awards show bash with live music by Luke James and Q-Tip among others—L.A. was buzzing with industry events all over town this weekend and we have the details on it all in today's installment of Last Night's Parties. More»

Matt Leinart gets celebs, Playmates, and pro athletes like Omar Miller, Reggie Bush, and Jayde Nicole to go head-to-head in a bowling tourney for charity; a pregnant Jenna Fischer attends the premiere of her new film looking like she's due any minute with the support of her "Office" castmates as they fondle her baby bump on the red carpet; because there can never be too many rappers with their own alcohol brand, Venus and Serena Williams, Jeremy Scott, and Doug Ellin step out for the launch of Pharrell Williams' Qream Vodka, which supposedly tastes like strawberry Quik—get all the details on what went down Thursday night in L.A. before the weekend events kickoff in this edition of Last Night's Parties. More»

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Unless you're Soulja Boy, turning 20 is pretty unexciting; you still can't drink and you're already old enough to buy guns and porn. But last night the hip-hop star found a way to celebrate his 20th with a serious blowout at The Highlands despite the fact that he's not even legally allowed to be there. More»