Meghan Trainor opened up about the insecurities she dealt with growing up and revealed that she used to try and cover her body up as best she could.

In a new interview for CBS' Sunday Morning with Charles Osgood, Trainer explained that before she was “All About That Bass,” she was all about wearing baggy clothing so she wouldn’t show her body.

"I -- every day -- wore sweatshirts and sweatpants to cover up my body, 'cause I was so insecure," the 22-year-old said. "And it would be summer. And I would go on vacation and I'd be in Trinidad and Tobago, 90-degree weather, and I'd be wearing sweatshirts that said 'Nantucket.'"

Trainor admitted that she thought her biggest problem area was her arms.

"I didn't want to show my arms," she said.

The singer eventually learned to accept herself and put out the ultimate body acceptance anthem “All About That Bass” in 2014.

Her entire interview with Tracy Smith airs on March 6.