Kardashian and Jenner explore the Louvre in Paris. Plus: Kanye & Jay-Z, Jessica Simpson and more

GUITAR HEROES

Blink-182's Mark Hoppus poses with John Mayer – his first guest! – in New York at the premiere Wednesday of his new show, A Different Spin, a day ahead of its airdate on Sept. 16 at 7 p.m. ET on Fuse.