She went on to tell her fans and followers that she is apologetic for not being able to perform in Las Vegas due to her health conditions.
Stefani even goes on to promise her fans that she is "doing everything" she can to get well enough to perform later this month.
Gwen Stefani waves to her fans after a show.
"I am so sorry, but I am still not feeling well & will be unable to perform my #JustAGirlVegas show Saturday, February 8 at @ZapposTheater at @PHVegas. Refunds will be available at their original point of purchase," the singer tweeted on Friday, reports people.com.
"I am doing everything I can to get well & plan to be back on stage for my shows February 12-22," Stefani added in another tweet.
"Thank u for all of the well wishes. Hope to see you back in Vegas soon."
It's not the first time that Stefani has had to cancel a show during Las Vegas residency due to illness.
Last July, Stefani had to cancel a show because she was "unwell".