Swift catches a case of the giggles during a TV appearance in Toronto. Plus: Gwen & Zuma, Rihanna, Nicole Richie and more

  • COME ON, VOGUE! photo | Ellen DeGeneres, Heidi Klum

Credit: Michael Rozman/Warner Bros.

Published: Friday Jan 30, 2009 | 05:00 PM EST

COME ON, VOGUE!

It's a pose-off! Supermodel Heidi Klum engages in a friendly competition Thursday with talk-show host – and CoverGirl! – Ellen DeGeneres, while taping an episode set to air Feb. 2.