According to In Touch magazine, the singer-turned-fashion designer - who is expecting her first child with fiancé Eric Johnson - has already put on 30 pounds thanks to her love of chips and guacamole.
“At this rate, she could wind up gaining 70 pounds before she gives birth,” said a source.
Now the 31-year-old is said to have decided to make a few changes, including employing a chef, to help keep her weight gain within the recommended levels.
“She hired one to help her cut calories and make sure she’s eating the right foods,” said a second insider.