Beyonce Knowles rang her mother in a panic after she was caught in a massive earthquake which hit Japan on Tuesday morning (11Aug09).
The Crazy In Love hitmaker and her sister Solange were in Tokyo on Monday (10Aug09) to promote Japanese clothing brand Samantha Thavasa.
The siblings stayed overnight in the city - and Beyonce was abruptly woken up by the tremors, which measured a staggering 6.6 on the Richter scale.
She called her mum Tina for reassurance - but her sister slept through the disaster.
In a series of posts on her Twitter.com page, Solange writes, "How did I sleep through a serious earthquake. Again. Japan. wtf (what the f**k)?
"Wtf! wtf! wtf! My sister said she was scared out of her mind and calling my mom and I was snoring. 6.6? omg (oh my god)! omg! omg! tsunami watch???
"Praying for everyone affected by this."
The earthquake struck southwest of Tokyo. There were no known deaths as WENN went to press.