Another week, another Celebrity GPS!Your favorite stars are always on the go, but they’re never off of our radar! See where the actors, singers and musicians you know and love were seen out and about this week.NEW YORK: After Wednesday's appearance on Good Morning America, actress Krysten Ritter stopped by downtown eatery Isola Trattoria & Crudo Bar at Mondrian SoHo for dinner, where the Don't Trust the B---In Apartment 23 star ran into Jonah Hill and a group of pals.NEW YORK: Kelly Killoren Bensimon helped Jimmy Choo celebrate the launch of his exclusive collaboration with artist Rob Pruitt at the Fletcher-Sinclair Mansion. Guests enjoyed music by DJ Nick Cohen and got a chance to view the limited collection on display during the evening.NEW YORK: Gabrielle Union toasted to her 40th birthday with the new Courvoisier Gold at PH-D at Dream Downtown. Before the big bash, the star and her closest friends had a private dinner at Marble Lane, where Chef Roblé treated guests to hors d’oeuvres and signature cocktails.NEW YORK: DJ/Model Cory Kennedy was spotted dining at J.Y. Park's Kristalbelli restaurant where she later spun at their lounge upstairs.NEW YORK: Vanessa Hudgens and boyfriend Austin Butler were spotted having a cozy date at Empellon Taqueria, where they snacked on lobster tacos and sipped on specialty margaritas.LOS ANGELES: Zac Efron smiled at his fans while watching the season opener of the Los Angeles Lakers, who played the Dallas Mavericks at the Staples Center.NEW ORLEANS: Kristen Wiig arrived on set in character (without makeup), carrying two big bags of groceries while filming a scene for her new romantic comedy Hateship, Friendship.MIAMI: Kim Kardashian and boyfriend Kanye West held hands while shopping together before hosting a crazy Halloween party at LIV.