Celebrity Instagram Pictures | Feb. 14, 2013

Celebrities gave us a glimpse into their lives through social media this week, and whether they were partying at the Grammys, working on set, chilling backstage at New York Fashion Week, or just hanging with famous friends, they kept us in the loop. Victoria's Secret Angel Lily Aldridge got snap happy during a photo shoot, and Beyoncé Knowles laughed with Oprah. Hilary Duff posed for a pic, while Justin Bieber flexed his muscles with a few small children on hand.

Click through now to see the rest of this week's cutest celebrity candids, and don't forget to follow POPSUGAR on Instagram, Facebook, and Twitter!