Celebrity week in photos: Jennifer Lopez, James Franco, Katy Perry

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March 29: Justin Bieber danced for the crowd at the LIV on Sunday party in Miami Beach presented by Moët and Hennessy. Photo: Seth Browarnik/WorldRedEye.com

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March 23: Jennifer Lopez jetsetted to Mexico City to show off her apparel line at Forum Buena Vista. Photo: Getty Images

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March 23: Lisa Rinna and husband Harry Hamlin supported the upcoming Tribeca Film Festival at a cocktail reception at the Standard Hotel in West Hollywood. Photo: Getty Images

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March 23: Amanda Seyfried showed off a smokey eye at the premiere of 'While We're Young' in NYC. Photo: Getty Images

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March 24: Jennifer Hudson met the cast of Broadway's 'Honeymoon in Vegas' including Tony Danza, David Josefsberg, Brynn O'Malley and Rob McClure backstage. Photo: Bruce Glikas/FilmMagic

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MARCH 25: OITNB's Diane Guerrero and Gina Rodriguez caught up at the Nuevas Latinas Living Fabulosa Launch in New York City. Photo: WireImage

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March 25: James Franco made his way to the A-T-L for the Atlanta Film Festival where he attended a screening for 'The Heyday of the Insensitive Bastards.' Photo: Paras Griffin/Getty Images

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March 26: Nastia Liukin supported 'DWTS' coach Derek Hough at Radio City's 'Spring Spectacular' in NYC. Photo: Getty Images

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March 25: Will Ferrell and Kevin Hart arrived at the premiere of Warner Bros. Pictures' 'Get Hard' at the Chinese Theatre in Los Angeles. Photo: Getty Images

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March 24: Hailey Baldwin hung with fellow model Jordan Barrett at POPSUGAR's Headliner showcase at NYC's Gansevoort Park Hotel. Photo: Will Ragozzino

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March 26: Zanna Roberts Rassi and Susan Lopez hosted the GREAT British Baby Shower in anticipation of Prince William and Kate Middleton's second child at the British Consulate in NYC. Photo: Kevin McAleer for the British Consulate General New York

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March 26: Katy Perry, back in Los Angeles after traveling the world for her latest tour, ventured to the Theater at the Ace Hotel for her premiere of 'Katy Perry: The Prismatic World Tour.' Photo: Getty Images

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March 26: Paris Hilton hung with DJ VICE at Dave Grutman and Cedriv Gervais' first annual BBQ with Moët & Chandon Ice Imperial BBQ during Winter Music Conference in Miami. Photo: Seth Browarnik/WORLDREDEYE.COM

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March 25: Mamie Gummer and Emily Jerome watched Billy Magnussen's band Reserved for Rondee perform for the Rose Bar Sessions at the Gramercy Park Hotel in NYC. Photo: Benjamin Lozovsky/BFAnyc.com

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March 26: Liv Tyler left her newborn son Sailor at home to enjoy the Spring Spectacular at Radio City in NYC. Photo: Getty Images

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March 26: Bella Thorne bared her midriff in a black ensemble for the Radio City Spring Spectacular in NYC. Photo: Getty Images

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March 27: Sienna Miller signs her caricature before hanging it on the 'Wall of Fame' at Sardi's Restaurant in NYC. Photo: WireImage

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March 28: Alessandra Ambrosio shared her favorite social media app, which is Instagram, at the Simply Stylist LA event that was presented by CITI and The Grove in Los Angeles. Photo: Eric Charbonneau