Portman gives a gracious wave to fans outside the Letterman studios in N.Y.C. Plus: Kate & Will, Leo, Justin Timberlake, Kourtney Kardashian, Will Ferrell and more

STAIR MASTER

Would Taylor Swift do this? Selena Gomez, who recently compared herself to the "Red" superstar, climbs to new heights during her Wednesday concert at L.A.'s Staples Center, the latest stop on her world tour.