London: Michelle Williams is suffering from stomach flu.
The 31-year-old fell sick on Christmas Day and she`s still suffering with the illness, reports contactmusic.com.
"Soooooooo I am getting over the stomach flu... has not been a fun two days at all(sic)," Williams posted on micro-blogging site Twitter.
"You guys take care... I`m gonna sip on this (energy drink) Gatorade!! It`s taken me two days to get through this one bottle! I gotta get hydrated," she further added.