Sonic has partnered with Goodby Silverstein & Partners to create square milkshakes specifically designed for Instagram. The fast-food chain has partnered with chef Christine Flynn, @ChefJacquesLaMerde, to create the shakes. Using Instagram's 'Shop Now' geo-targeted sponsored ads, festival-goers at Coachella will have the chance to order the shakes and sample them on the spot. Sonic is encouraging samplers to share their 'Square Shakes' on Instagram. The Instagram campaign will take place at Coachella on April 16, where attendees can try the brand's new 'Creamery' flavors including Vanilla Bean, Buttered Toffee, Dark Chocolate, and Bourbon Brown Sugar. CreditsCo-Chairman: Jeff Goodby and Rich SilversteinExecutive Creative Director: Margaret JohnsonCreative Director: Jon WolanskeAssociate Creative Director: Tristan GrahamCreative: Rohan CookeCreative: Laura PetruccelliContent Creative: Quinn GravierDesigner: Todd KingDirector of Interactive Producer: Margaret Brett-KernsExecutive Producer, Director of Graphic Services: Jim KingSenior Interactive Producer: Danielle RiccardiSenior Print Producer and Art Buyer: Noah DashoDirector of Experiential, Music Supervisor: Todd PorterInteractive Producer: Severin SauliereContent Producer: Isaak LeTechnology Director: Mike KelloggAssociate Technology Director: Andre CardozoPost Production: E Level FilmsDirector of E Level: PJ KollPost Producer: Jack WhalenEditor: Erik JohnsonAssistant Editor: Lori ArdenMotion Graphics Creative Director: Mike LandryMotion Graphics Artists: Nathan Shipley, Chad Ford, Anthony Enos, Ratha Nou, Alec CummingsColor: Fabio BenedettoMusic: Nic DeMatteoStory Board Artist: Steph SanchezGroup Account Director: Leslie BarrettAccount Director: Jenna DuboeAccount Manager: William de RykCulinary Artist: Christine Flynn (Chef Jacques la Merde)Food Artist Manager: Brandon RosenblattPhotography Studio: Dwight Eschliman PhotographyPhotographer/Director: Dwight EschlimanDP: Charley WestonProducer: Jamie AntonioliFood Stylist: Karen Eva