Instagram’s the hot photo sharing app on every stylish girl's iPhone and Android. You're not the only ones snapping away, our editors are hooked too! We love sharing our behind-the-scenes moments with our over 64,000 loyal followers. This week we chatted with Halle Berry about makeup, checked out the new Oscar de la Renta collection, and popped by Ralph Lauren’s mansion. Join the action by signing up for an account and follow us @instylemagazine. Don't have a smartphone? We've rounded up some of our favorite photos here, and check back every Saturday to see our latest fashionable shots.