Meghan Trainor addresses her surgery and weight loss in lyrics . All About That Bass, which famously celebrated plus-size bodies, includes the line, “ Yeah it’s pretty clear, I ain’t no size two ...

Meghan Trainor changed the lyrics to her body-positive hit "All About That Bass" during a recent performance in the wake of her weight loss. The 31-year-old singer performed the song on May 10 at ...