I started to put on weight when I was about four and a half and it got really bad when I was around nine. I ballooned. I was about 110 pounds.

In March 2012 Wilson admitted that Carnie Wilson received lap-band surgery earlier in 2012. In August 2011 Wilson became a judge on the ABC show Karaoke Battle USA. Over the course of the show Wilson lost 22 pounds which Carnie Wilson eventually gained back.