Credit: Justin Lane/Getty Images Photo: A woman walks along the North Pool of the 9/11 Memorial at the World Trade Center site on September 11, 2013.

Today is a day of remembrance — not just for New Yorkers or even for Americans, but for all global citizens who seek peace and who mourn the loss of innocent lives on September 11, 2001.

Celebrities are no exception. Despite their extravagant and often frivolous lifestyles, they too were affected by the tragedy of that day 12 years ago. And today they're taking to Twitter to share their memories, to honor those we lost, and to express hope for the future.

Dan Clarendon is an assistant editor at Wetpaint Entertainment. Follow him on Twitter and Google+!