Celebrity Gigi Hadid Celebrates Her Birthday with Kendall Jenner, Plus More of the Best Weekend Instagrams By Rita Kokshanian Rita Kokshanian Rita Kokshanian is a Los Angeles-based writer and editor who covers celebrity, fashion, beauty, and lifestyle. She was previously an Assistant Editor for InStyle and is currently the Senior Copywriter at The Grind. InStyle's editorial guidelines Published on April 27, 2015 @ 03:45PM Pin Share Tweet Email Photo: Instagram/@kendalljenner The birthday celebrations continue for Gigi Hadid. The model, who rang in her 20th year on April 23, was joined by Kendall Jenner for a fun-filled belated bash in N.Y.C. on Sunday, and the duo documented the night with an adorable Instagram (above). But they weren't the only ones sharing their fun this weekend—Blake Lively posted some behind-the-scenes snaps from her Age of Adaline press tour, while Sam Smith showed his love to fans with a new tattoo dedicated them. See these and more of our favorite Instagrams from the weekend below. Blake Lively: Selena Gomez: Taylor Swift: Lena Dunham: Sam Smith: See the Best Instagrams from Last Weekend