Celebrity Twitter Pictures Week of March 22, 2012

This week in the world of social media, some of our favorite stars shared photos from their times of work and play. We saw some adorable animal adventures with Lauren Conrad and Gisele Bundchen during their trips to Africa, and caught up with Jessica Alba during her St. Patrick's Day festivities. Lenny Kravitz and Josh Hutcherson hung out together during their Hunger Games press tour while Bar Refaeli got goofy with a pair of broken sunglasses. Click through to see all of the social media snaps now, and don't forget to follow PopSugar on Twitter!