Apple CEO Tim Cook made a surprise appearance today during the launch of the iPhoen 6s and 6s Plus at the Apple Store in Georgetown in Washington D.C. As has become almost a custom for Cook, he spent time shaking hands with visitors and Apple Store employees and posing for pictures.

You can check out the highlights of Cook's visit in The Washington Post's video below:

Elsewhere, Apple SVP of Retail and Online Sales, Angela Ahrendts, stopped by an Apple Store in London for the launch of the new phones. Ahrendts also took photos with customers and staff, posting about the event on Twitter.

Retail sales of the iPhone 6s and 6s Plus began earlier today across in several countries around the world, including the U.S., U.K., Australia, Canada, China, France, Germany, Hong Kong, Japan, New Zealand, Puerto Rico, and Singapore.

Source: The Washington Post, Angela Ahrendts (Twitter); Via 9to5Mac