Munn, who was born in Oklahoma, has been watching the tragedy unfold on the news and on Thursday (26May11) took to her Twitter.com page to urge fans to help locate Ryan Hamil, a three-year-old boy who went missing during the storms.
The Date Night star was left devastated after learning the youngster and his 15-month-old brother Cole both died in the disaster.
In a series of posts on Twitter, Munn writes, "My thoughts/prayers with tornado victims. My heart goes out to the Hamil family in Oklahoma.. Their 2 little boys didn't survive the tornado. So sad. My hope & lots of good thoughts & wishes are w/the (with the) people affected by the tornadoes.... Big hug."