Credit: NAV/Fame Pictures Photo: Kim Kardashian Struts Her Stuff in Los Angeles on April 26, 2011

Kim Kardashian and other celebrities tweeted their reactions Sunday night to the news that Osama bin Laden had been killed.

"Osama Bin Laden is dead!!!” Kim tweeted. “I can't wait to hear President Obama's announcement!!!"

The Sisters K — Khloe and Kourtney — chimed in via Twitter as well.

"I loved our Presidents speech. May God bless us all!" Khloe tweeted.

Kourtney Kardashian tweeted, "Wow!! Ding dong the witch is dead! #osama"

Other celebs — including Oprah, Lady Gaga, and Katy Perry — joined in too, expressing disbelief that 10 years after 9/11, one chapter of terrorism has been closed.