Regrettably, the M-Train has been derailed.

On Thursday (December 8), Meghan Trainor announced that her remaining 2016 tour dates have been cancelled due to illness.

The singer-songwriter explained that her doctor has issued "strict vocal rest" which will see her out of commission through the end of December.

"I posted last week that I wasn't feeling great, but was powering through the best that I could," Trainor wrote in an Instagram post. "Unfortunately, I am not feeling any better and after leaving the doctor today, I have been put on a strict vocal rest for the next two weeks."

"This absolutely kills me because I was so excited to see all of you on the road," she continued. "I'm going to go home and rest so I can get back to see you all as soon as I can. I love you so much and am so appreciative of your love and support that you constantly show me. You mean everything to me. Can't wait to see you in 2017! Love MTRAIN."

The "Me Too" singer was scheduled to perform at the 96.5-FM TIC All Star Christmas concert in Connecticut, Z100's Jingle Ball 2016 in New York City, HOT 99.5-FM's Jingle Ball 2016 in Washington D.C., Power 96.1-FM's Jingle Ball 2016 in Atlanta and at the Y100 Jingle Ball 2016 concert in Florida this month.

See her message to fans below:

Who Let the Aughts Out? 16 Signs the 2000s Are Back