A-list stars were hard at work and at play this week! Sofia Vergara prepared a birthday feast, and Justin Timberlake shot a self-portrait in an airplane cockpit. Kim Kardashian hung out with her future sister-in-law, while Kelly Ripa and Regis Philbin spent quality time at the pool. Click through to see all the pics, and don't forget to follow PopSugar on Twitter for exciting news and exclusive photos!
Justin Timberlake, Kim Kardashian, Sofia Vergara, and More in This Week's Fun and Funny Celebrity Twitter Pictures!