Celebrity Star-Studded: The Best Parties This Week By Jonathan Borge Jonathan Borge Instagram Twitter Jonathan Borge is a writer and editor living in New York City. His writing has appeared in Glamour, Refinery29, Forbes, and PAPER, among other publications. Plus, he's held staff positions at Marie Claire, InStyle, and OprahDaily.com. Currently, he's the Senior Entertainment Editor at Bustle Digital Group's Elite Daily, where he oversees digital covers, features and profiles, freelance essays, and strategy for the site's TV/Movies and Celebrity and Music sub-verticals.He primarily writes about pop culture and style, and has a passion for telling LGBTQ+ and Latinx stories. When he's not working, he's likely waiting for Lady Gaga to announce her next tour. InStyle's editorial guidelines Updated on August 18, 2017 @ 06:15PM Pin Share Tweet Email Photo: Paul Archuleta/Getty The hot parties were in Los Angeles this week. Olivia Culpo headed to Hollywood's Liaison Lounge on Thursday night, where she was on hand to celebrate her capsule collection with U.K.-based brand PrettyLittleThing. There, she kept it cool in a white shirt she styled with a black leather mini-skirt, open-toe booties, a rectangular clutch, and, of course, a bold red lip. Rita Ora took the stage at the party to perform "Your Song," so you know it was a good time. At Hotel Bel-Air, Heidi Klum reminded us that yes, she is indeed a designer. The supermodel took over the space for a "bra brunch" in celebration of her latest Heidi Klum intimates campaign. She kept it casual in jeans, a white shirt, and a flower in her hair. Stars kicked off the celebrations over the weekend at producer Jennifer Klein's home, where they flocked for her annual Day of Indulgence. Ciara, Lily Collins, Kerry Washington, and Rashida Jones came together for lots of pampering and catching up. RELATED: Olivia Culpo's Chic Vacation-Ready Swimsuits Back in New York, young things Dylan Sprouse and Tavi Gevinson headed out for the premiere of Patti Cake$. Though they arrived separately, they both matched in a black top with classic blue jeans. Sometimes, the basics are the best sartorial choice. Scroll down for the best parties of the week. 01 of 06 Heidi Klum Stefanie Keenan/Getty at her Heidi Klum Intimates campaign celebration. 02 of 06 Rashida Jones and Kerry Washington Amy Graves at the 19th annual Day of Indulgence. 03 of 06 Lily Collins and Ciara Amy Graves at the 19th annual Day of Indulgence. 04 of 06 Tavi Gevinson Jamie McCarthy/Getty at the premiere of Patti Cake$. 05 of 06 Dylan Sprouse Dimitrios Kambouris/Getty at the premiere of Patti Cake$. 06 of 06 Danielle Macdonald and Bridget Everett Jamie McCarthy/Getty at the premiere of Patti Cake$.