Pictures of Celebrities on Social Media | Oct. 25, 2012

There was a lot going on in the fashion world this week, what with numerous store openings, parties, and the beginning of many a Halloween celebration. We caught up with some of our favorite style setters during their moments of work and play through social media. Jessica Hart took a tropical trip and shared some photos of the sunset, while Bar Refaeli partied with Donatella Versace during the brand's store opening. Alessandra Ambrosio cuddled with a furry fan during a photo signing, and Coco Rocha and Zac Posen got lovey-dovey at the Bergdorf anniversary event.

Click through now to catch up on it all and don't forget to follow FabSugar on Twitter, Facebook, and Instagram!