London, Dec 29 : Singer 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.(IANS)