Hello Kitty Con: Sanrio character celebrates 40th birthday with four-day festival – New York Daily News

More than 25,000 fans are expected; An exhibition at the neighboring Japanese American National Museum, “Hello! Exploring the Supercute World of Hello Kitty,” will continue through April 26, 2015.

Hello Kitty celebrates 40 years

Happy birthday Hello Kitty! Superstar cat celebrates 40th anniversary

SANRIO® Announces a Celebration of 50 Years of Hello Kitty

Hello Kitty celebrates 40 years

Hug Life: Four Days in a Hello Kitty Convention Tattoo Parlor

Hello Kitty Con being staged in Los Angeles to celebrate 40th birthday

Visiting Hello Kitty Con and “Hello! Exploring the Supercute World of Hello Kitty” at JANM

The power of cute: Hello Kitty Con comes to LA, Stories

Hello Kitty celebrates 40 years

List of Sanrio characters, Ultimate Pop Culture Wiki

Happy 40th birthday, Hello Kitty! Here's how local fans are celebrating – Orange County Register