Katy Perry Wraps Up 'Witness' Live Stream With Dazzling Free Concert in LA

Katy Perry gave fans an special treat to mark the end of her four-day live stream, which she held to promote her new album Witness. The 32-year-old “Swish Swish” singer went barefoot and took the stage at the “Witness World Wide” exclusive YouTube live stream concert – which was free for fans – on Monday