The Queen this afternoon sent a "heartfelt" message to President Obama, hours after a devastating tornado struck Oklahoma.
"I was deeply saddened to hear of the loss of life and devastation caused by yesterday’s tornado in Oklahoma.
"Prince Philip joins me in offering our heartfelt condolences to the victims and their families at this difficult time." a statement read.
The Queen's message comes after a huge tornado ripped through Oklahoma City suburbs, leaving 91 dead and over 100 people being treated in hospitals.
A state of emergency has been confirmed as President Obama declared a
'major disaster' in the area. The gigantic tornado has been labeled one
of the worst to hit the area since 1999, when a previous tornado killed
Signing the message with 'Elizabeth R', the monarch continued: "Our deepest sympathies go out to all those whose lives have been affected, as well as the American people."
As the Queen led tributes to the victims celebrities took to social media site Twitter to add their support.
The Kardashian sisters were amongst the first to tweet with Khloe Kardashian tweeting: "My heart is breaking for Oklahoma!!!! Please Lord please send your angels to heal and protect these families!!!", while sister Kourtney added: " Just now hearing about Oklahoma. My Heart is breaking. Prayers."
Actress Milla Jovovich expressed her shock at the disaster as she posted: "I want to send my prayers to all the people of Oklahoma struck by the tornado.i have friends there as well and i pray that everyone is safe!"
As the world reacted, singer Ricky Martin tweeted: "My heart goes out to everyone affected by the devastating #Oklahoma City #tornado. Sending love," as Cher added "We need 2 say prayers 4them".
A large search team are continuing to search the area, and President Obama has ordered federal authorities to join the efforts in looking for survivors.